---
product_id: 689361205
title: "CoolFire (The Original) - USB-C UV Free Solar Watch Fast Charger for All Eco Solar Watches. Safe 24/7 Charging (No 8H Timer Needed). Reloj Hombre Solar Charger. Fits G-Shock, Citizen, Seiko, Garmin GY"
brand: "coolfire"
price: "$67.99"
currency: USD
in_stock: true
reviews_count: 8
category: "Coolfire"
url: https://www.desertcart.ec/products/689361205-coolfire-the-original-usb-c-uv-free-solar-watch-fast
store_origin: EC
region: Ecuador
---

# 40,000 LUX powerful LED output Universal Type-C fast charging UV-free light protects watch finish CoolFire (The Original) - USB-C UV Free Solar Watch Fast Charger for All Eco Solar Watches. Safe 24/7 Charging (No 8H Timer Needed). Reloj Hombre Solar Charger. Fits G-Shock, Citizen, Seiko, Garmin GY

**Brand:** coolfire
**Price:** $67.99
**Availability:** ✅ In Stock

## Summary

> ⚡ Recharge your solar watch in style—no sun required, no worries guaranteed!

## Quick Answers

- **What is this?** CoolFire (The Original) - USB-C UV Free Solar Watch Fast Charger for All Eco Solar Watches. Safe 24/7 Charging (No 8H Timer Needed). Reloj Hombre Solar Charger. Fits G-Shock, Citizen, Seiko, Garmin GY by coolfire
- **How much does it cost?** $67.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/689361205-coolfire-the-original-usb-c-uv-free-solar-watch-fast)

## Best For

- coolfire enthusiasts

## Why This Product

- Trusted coolfire brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Portable Design:** Lightweight 3.5 oz charger fits effortlessly on your desk or in your travel bag.
- • **Trusted by 300,000+ Users Globally:** Highly rated 4.5 stars for reliability and performance from USA to Japan.
- • **UV-Free Light for Lasting Elegance:** Protect your watch dial and hands from fading with gentle, UV-free LEDs.
- • **Universal Compatibility with Style:** Fits all eco-friendly solar watches with included adjustable silicone bezels.
- • **Fast-Charge Your Solar Watch Anywhere:** Powerful 40,000 LUX LED output delivers rapid, safe charging without sunlight.

## Overview

The CoolFire Type-C UV Free Solar Watch Fast Charger offers a cutting-edge 40,000 LUX LED light source that safely and efficiently charges all eco solar watches without harmful UV rays. Designed with adjustable silicone bezels for universal fit and powered via USB Type-C or AAA batteries, it prevents overheating and fading while maintaining optimal battery health. Trusted by over 300,000 users worldwide and boasting a 4.5-star rating, this compact, lightweight charger is the essential accessory for any solar watch owner who values convenience, protection, and performance.

## Description

desertcart.com: CoolFire - Type-C UV Free Solar Watch Fast Charger for All Eco Solar Watches for Men, Reloj Hombre Portable Battery Charger. for All Kinds of eco Solar Watches. (Silver) : Cell Phones & Accessories

Review: Fast, simple, cheap Universal charger for all of your solar watch needs. - As the title says. This will work with any solar/Eco-Drive/Garmin wrist or smart solar device. Powerful 40,000 Lumen output charges my Citizen fully in just 10 hours. (high setting powered via USB) In the box you get a booklet of instructions, 2 silicone rings to gap the watch face just far enough away to prevent substantial heat buildup. And one USB A to Mini USB cord for power supply. It has an internal AA battery compartment for low power charging on the go. The mode selector switch only work on "High" with USB cable connected to a power source. It will NOT run low power charging unless there is a set of AA's in the compartment - and honestly, it's output is weak. Much weaker. By the time you run down the AA's, you *might* have half charged an Eco-Drive. In a travel, or weather emergency, I guess it is better than nothing at all. The two different silicone rings mate to the faces of various sized watches, so try them to get the best light leak free interface. It does not come with a square "Casio" Tough Solar specific ring, but you can still balance one on top with the round rings just fine. Note: The charger ships with a scratch resistant film applied to the face of the lens. Remove it to gain full, unobstructed light and overall performance. I only used it with USB power, and the "High" output setting. It works very well for my purposes. To revive "dead", inoperable devices, follow instructions from device manufacturer to stop your movement or "shut down" your smart watch and then leave it up on this charger for at least 2, maybe 3 days. It can pull them back from the dead, provided that your solar cell is in good condition. No amount of charging on this device or days left in direct sunlight could pull a completely failed device back to life. I have unscientifically measured the light output on the high setting using an Android phone with a light sensor app that used the proximity sensor on the phone. Point blank, resting on the rubber ring I measured (A slightly jumpy) 39,500 ~ 42,000 lumens. The lightweight and small construction makes packing it simple. Use is as simple as finding a ring that fits. Prop the watch up on it and turning it on. I find an overnight run while I sleep to more than adequately keep my solar watches running at their best. No fear of overcharging or overheating my watches - the puck runs cool. My watches have built in overcharge protection. You just have to be patient depending how discharged or dead your watch is. Charging on high is roughly equivalent of 40% of full sunlight in high noon, so calculate roughly how long you need to set your device on it. It was a no-brainer purchase as I am a night owl. I rarely see full, or daily sunlight, nor have enough ambient light to at least maintain the hybrid battery charge in the long term. This simple to use gizmo takes care of all that and any charge anxieties you may heave.
Review: Just what I need. - I received my desertcart order for two of these chargers and I immediately tried them out. Each one can be powered in three ways: 1. Mini USB cable. 2. 4.5 V DC power supply. 3. 2 AAA batteries. When you use the AAA batteries, only four of the LEDs will light up. I don't know how well the four LEDs charge a solar watch because I only tested my chargers with the batteries to make sure that the battery terminals were making good contact. I never ran them for any length of time with the AAA batteries. For the long term test, I powered my two chargers with one of these Vivitar USB chargers that has two 2 A USB outputs: https://www.desertcart.com/dp/B005GCMYAG/ref=cm_cd_asin_lnk Note that if you plan on getting a dual USB output charger similar to what I bought, look carefully at the current output through the two USB ports. I found that most of the units do not have a full 2 A output from both USB ports. Most of them have 2 A from one and 1 A from the second one. Ideally, you want as much current as possible (2 A) from both USB ports. The Vivitar one that I mentioned above was one of the few with that option. Despite what the desertcart reviewers said, I have had absolutely no problems with the one that I bought. The solar watch LED chargers are made from very thin black plastic and they are very light weight. I would not even think about taking them on vacation with me because I don't think that they'd survive bouncing around in a suitcase. They are plenty durable enough for what I intend to do with them though - sit on my dresser and charge up my Casio, Seiko, and Citizen solar watches once a month. I put two of my most favorite Citizen Eco Drive dive watches on the new chargers: my Eco Zilla and my Promaster Aqualand Depth Meter diver. Both watches rested on top of the chargers' rubber bezels without extending beyond the bezels' outer edges. The chargers' rubber bezels are great because they did not scratch my watch bezels. The LED chargers worked great! I have never run my solar watch batteries down very far (that will shorten the life of them) but my depth meter dive watch has a power reserve meter on it and it was down to about 75% charge before I started my test. After about three hours on the LED charger, the meter was up to a full 100%. Even though my two watches were fully charged up, I decided to leave them on the LED chargers for a full 24 hours. After sitting on the chargers for the full 24 hours, my watches were only a little bit warm and not dangerously so. This is a major benefit to using these LED chargers versus leaving solar watches on a windowsill where they can really cook. Also, unlike sunlight, LEDs do not give out UV light so they will not fade watch dials and hands. Fading hands is a big problem with some Citizen Eco Drive dive watches with bright orange minute hands if they are left on a windowsill repeatedly for recharging. The chargers come with two different sized rubber bezels. Supposedly one is for woman's watches and one is for men's watches. I only used the larger one for men's watches and it worked just fine. It was able to accommodate both my largest watch (the 50 mm Aqualand Depth Meter BN2021-03E diver that I ran my first test on) and my smallest watch (a 40 mm Citizen BN0000-04H diver.) Both fit just fine though the larger watch rested on the highest top surface of the rubber bezel, while the smaller one fit down low inside the bezel on its sloped/inclined surface. All of my other solar powered watches in between those sizes fit just fine on the chargers. When resting my large Aqualand Depth Meter and Eco Zilla watches on the chargers, the bumps on the surfaces of the bezels caused the bezels to not sit 100% flush against the chargers' rubber bezels all the way around. Those gaps between the watch bezels and charger bezels let some of the light from the LEDs shine out and into my bedroom. My wife complained about the light on the ceiling last night when she was first went to bed but after she shut her eyes, she fell asleep in a few minutes. She slept just fine throughout the night so the light spilling out from the chargers may seem like a lot at first, but once you close your eyes you won't notice it. My smaller watches like the 40 mm Citizen diver I mentioned before that fit within the bezel did not have nearly as much light spill out. Also, in theory, a watch bezel that is perfectly smooth will rest completely flush against the charger bezel and prevent any light from shining out and into the room. None of my solar watches have smooth bezels so I did not get the chance to test out that theory. So I give these little solar watch chargers two thumbs up. For what they are, they're not the cheapest things out there, but if they keep my solar watch batteries from going dead and keep my watch hands and dials from fading, they're a great buy. Some of the negative comments/reviews for these solar chargers say to just leave solar watches on a window sill to recharge them. Here is my reply to that idea: Putting a solar watch on a window sill exposes it to lots of UV light. That harsh UV light can fade the dial and hands if they are brightly colored, as are the minute hands on several of my solar diving watches. There are pictures on the internet of badly faded dive watch dials and hands from people that made the mistake of using a window sill to recharge their watches. Unlike sunlight, LEDs like what are used in this charger do not give out a lot of UV light (some sources say that LEDs do not put out any UV light) and thus they will not fade anything that they illuminate. Also, if you have a Citizen Eco Drive watch, the instructions clearly state to avoid charging the watch in an area that becomes hot like a car dashboard. A window sill in direct sunlight can easily become just as hot as a dashboard. Too much heat is not good for the movement in solar watches. Of course, you can just wear a solar watch to recharge it (unless you're nocturnal) but when you're a watch collector, usually you have too many watches in your collection and your solar ones only come up in the rotation every few months at most. As a result they don't get the necessary wrist time to sufficiently keep their batteries fully charged between the times that they are worn. Letting solar watch batteries die repeatedly will drastically shorten their life. As others have found out the hard way, these chargers will not fix a completely dead rechargeable battery in a solar watch.

## Features

- ✅ CoolFire’s original solar watch charger has been trusted by over 300,000 satisfied customers from USA and Japan. Rated 4.5 out of 5 stars on desertcart and Rakuten, our solar watch charger uses multiple UV-free LEDs to evenly distribute light over your sophisticated solar watch panel, preventing fading, overheating, and ensuring optimal charging performance. Fast and safe charging for your solar watch with powerful 40,000 LUX light - no sunlight needed. Now it comes with a USB Type-C version.
- ✅ Includes 2 soft rubber caps to fit any men's or women's solar watch size
- ✅ UV free white light protects your watch from fading and damage
- ✅ Works with all kinds of eco-friendly solar watches
- ✅ USB Type-C (cable included, adapter not included)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DK6NJ4CF |
| Best Sellers Rank | #31,737 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #556 in Smartwatch Cables & Chargers |
| Customer Reviews | 4.5 4.5 out of 5 stars (5,865) |
| Date First Available | October 17, 2024 |
| Item Weight | 3.52 ounces |
| Manufacturer | TimeChant |
| Product Dimensions | 2.2 x 2.2 x 1.46 inches |

## Product Details

- **Brand:** Coolfire
- **Color:** SILVER
- **Compatible Devices:** AC-DC Converters
- **Compatible Phone Models:** For All Kinds of eco Solar Watches.
- **Connector Type:** USB Type C
- **Item Weight:** 0.1 Kilograms
- **Number of Items:** 1
- **Portable:** Yes
- **Power Source:** Battery Powered
- **Special Feature:** Fast Charging

## Images

![CoolFire (The Original) - USB-C UV Free Solar Watch Fast Charger for All Eco Solar Watches. Safe 24/7 Charging (No 8H Timer Needed). Reloj Hombre Solar Charger. Fits G-Shock, Citizen, Seiko, Garmin GY - Image 1](https://m.media-amazon.com/images/I/8165BeUcPiL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fast, simple, cheap Universal charger for all of your solar watch needs.
*by W***X on June 26, 2025*

As the title says. This will work with any solar/Eco-Drive/Garmin wrist or smart solar device. Powerful 40,000 Lumen output charges my Citizen fully in just 10 hours. (high setting powered via USB) In the box you get a booklet of instructions, 2 silicone rings to gap the watch face just far enough away to prevent substantial heat buildup. And one USB A to Mini USB cord for power supply. It has an internal AA battery compartment for low power charging on the go. The mode selector switch only work on "High" with USB cable connected to a power source. It will NOT run low power charging unless there is a set of AA's in the compartment - and honestly, it's output is weak. Much weaker. By the time you run down the AA's, you *might* have half charged an Eco-Drive. In a travel, or weather emergency, I guess it is better than nothing at all. The two different silicone rings mate to the faces of various sized watches, so try them to get the best light leak free interface. It does not come with a square "Casio" Tough Solar specific ring, but you can still balance one on top with the round rings just fine. Note: The charger ships with a scratch resistant film applied to the face of the lens. Remove it to gain full, unobstructed light and overall performance. I only used it with USB power, and the "High" output setting. It works very well for my purposes. To revive "dead", inoperable devices, follow instructions from device manufacturer to stop your movement or "shut down" your smart watch and then leave it up on this charger for at least 2, maybe 3 days. It can pull them back from the dead, provided that your solar cell is in good condition. No amount of charging on this device or days left in direct sunlight could pull a completely failed device back to life. I have unscientifically measured the light output on the high setting using an Android phone with a light sensor app that used the proximity sensor on the phone. Point blank, resting on the rubber ring I measured (A slightly jumpy) 39,500 ~ 42,000 lumens. The lightweight and small construction makes packing it simple. Use is as simple as finding a ring that fits. Prop the watch up on it and turning it on. I find an overnight run while I sleep to more than adequately keep my solar watches running at their best. No fear of overcharging or overheating my watches - the puck runs cool. My watches have built in overcharge protection. You just have to be patient depending how discharged or dead your watch is. Charging on high is roughly equivalent of 40% of full sunlight in high noon, so calculate roughly how long you need to set your device on it. It was a no-brainer purchase as I am a night owl. I rarely see full, or daily sunlight, nor have enough ambient light to at least maintain the hybrid battery charge in the long term. This simple to use gizmo takes care of all that and any charge anxieties you may heave.

### ⭐⭐⭐⭐⭐ Just what I need.
*by L***0 on May 2, 2017*

I received my Amazon order for two of these chargers and I immediately tried them out. Each one can be powered in three ways: 1. Mini USB cable. 2. 4.5 V DC power supply. 3. 2 AAA batteries. When you use the AAA batteries, only four of the LEDs will light up. I don't know how well the four LEDs charge a solar watch because I only tested my chargers with the batteries to make sure that the battery terminals were making good contact. I never ran them for any length of time with the AAA batteries. For the long term test, I powered my two chargers with one of these Vivitar USB chargers that has two 2 A USB outputs: https://www.amazon.com/dp/B005GCMYAG/ref=cm_cd_asin_lnk Note that if you plan on getting a dual USB output charger similar to what I bought, look carefully at the current output through the two USB ports. I found that most of the units do not have a full 2 A output from both USB ports. Most of them have 2 A from one and 1 A from the second one. Ideally, you want as much current as possible (2 A) from both USB ports. The Vivitar one that I mentioned above was one of the few with that option. Despite what the Amazon reviewers said, I have had absolutely no problems with the one that I bought. The solar watch LED chargers are made from very thin black plastic and they are very light weight. I would not even think about taking them on vacation with me because I don't think that they'd survive bouncing around in a suitcase. They are plenty durable enough for what I intend to do with them though - sit on my dresser and charge up my Casio, Seiko, and Citizen solar watches once a month. I put two of my most favorite Citizen Eco Drive dive watches on the new chargers: my Eco Zilla and my Promaster Aqualand Depth Meter diver. Both watches rested on top of the chargers' rubber bezels without extending beyond the bezels' outer edges. The chargers' rubber bezels are great because they did not scratch my watch bezels. The LED chargers worked great! I have never run my solar watch batteries down very far (that will shorten the life of them) but my depth meter dive watch has a power reserve meter on it and it was down to about 75% charge before I started my test. After about three hours on the LED charger, the meter was up to a full 100%. Even though my two watches were fully charged up, I decided to leave them on the LED chargers for a full 24 hours. After sitting on the chargers for the full 24 hours, my watches were only a little bit warm and not dangerously so. This is a major benefit to using these LED chargers versus leaving solar watches on a windowsill where they can really cook. Also, unlike sunlight, LEDs do not give out UV light so they will not fade watch dials and hands. Fading hands is a big problem with some Citizen Eco Drive dive watches with bright orange minute hands if they are left on a windowsill repeatedly for recharging. The chargers come with two different sized rubber bezels. Supposedly one is for woman's watches and one is for men's watches. I only used the larger one for men's watches and it worked just fine. It was able to accommodate both my largest watch (the 50 mm Aqualand Depth Meter BN2021-03E diver that I ran my first test on) and my smallest watch (a 40 mm Citizen BN0000-04H diver.) Both fit just fine though the larger watch rested on the highest top surface of the rubber bezel, while the smaller one fit down low inside the bezel on its sloped/inclined surface. All of my other solar powered watches in between those sizes fit just fine on the chargers. When resting my large Aqualand Depth Meter and Eco Zilla watches on the chargers, the bumps on the surfaces of the bezels caused the bezels to not sit 100% flush against the chargers' rubber bezels all the way around. Those gaps between the watch bezels and charger bezels let some of the light from the LEDs shine out and into my bedroom. My wife complained about the light on the ceiling last night when she was first went to bed but after she shut her eyes, she fell asleep in a few minutes. She slept just fine throughout the night so the light spilling out from the chargers may seem like a lot at first, but once you close your eyes you won't notice it. My smaller watches like the 40 mm Citizen diver I mentioned before that fit within the bezel did not have nearly as much light spill out. Also, in theory, a watch bezel that is perfectly smooth will rest completely flush against the charger bezel and prevent any light from shining out and into the room. None of my solar watches have smooth bezels so I did not get the chance to test out that theory. So I give these little solar watch chargers two thumbs up. For what they are, they're not the cheapest things out there, but if they keep my solar watch batteries from going dead and keep my watch hands and dials from fading, they're a great buy. Some of the negative comments/reviews for these solar chargers say to just leave solar watches on a window sill to recharge them. Here is my reply to that idea: Putting a solar watch on a window sill exposes it to lots of UV light. That harsh UV light can fade the dial and hands if they are brightly colored, as are the minute hands on several of my solar diving watches. There are pictures on the internet of badly faded dive watch dials and hands from people that made the mistake of using a window sill to recharge their watches. Unlike sunlight, LEDs like what are used in this charger do not give out a lot of UV light (some sources say that LEDs do not put out any UV light) and thus they will not fade anything that they illuminate. Also, if you have a Citizen Eco Drive watch, the instructions clearly state to avoid charging the watch in an area that becomes hot like a car dashboard. A window sill in direct sunlight can easily become just as hot as a dashboard. Too much heat is not good for the movement in solar watches. Of course, you can just wear a solar watch to recharge it (unless you're nocturnal) but when you're a watch collector, usually you have too many watches in your collection and your solar ones only come up in the rotation every few months at most. As a result they don't get the necessary wrist time to sufficiently keep their batteries fully charged between the times that they are worn. Letting solar watch batteries die repeatedly will drastically shorten their life. As others have found out the hard way, these chargers will not fix a completely dead rechargeable battery in a solar watch.

### ⭐⭐⭐⭐⭐ Recommend
*by T***R on January 20, 2026*

Works great to keep my watch charged good value for the money high quality very durable weight is just right fit in size are appropriate should be very durable

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---

*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-13*