SJCAM SJ8K 4K 30FPS WiFi Action Camera with Touch Screen - Underwater Camera 30M - 8X Zoom Waterproof Sport Vlog Cam Support 2.4/5G Remote Control Live Stream EIS Stabilizer with Helmet Mounting Kits

This is the best solution for a wireless camera for bikes. It is very, very affordable for what you get. The unit sends you a BUNCH of extras. I'm going to review this as a person who uses it specifically as a rearview camera for a bike. It definitely is versatile for other applications (helmet cam, etc), but I can't speak to those. The GOOD: -The most affordable WIRELESS camera system for bikers. The SJ100 is cheaper, but I much prefer this unit for the fact that there's two batteries, more than one button (THANK GOD), and it lasts about 1.5 hours per battery -Pretty small! This is a fairly compact camera, and it's smaller than a GoPro -The camera quality is pretty good, especially for the cost/size -LOTS of additional materials for different kinds of mounts, including click-on mounts, sticker mounts, and different housing options -They give you everything you need- even a micro SD card! The FINE: -The camera is not actually waterproof or water resistant, but you can use a waterproof housing (included), which I did. This unit is actually a bit of a chore to get the camera into and out of consistently, which becomes a bit of a negative when you get to the battery time -It does not do image stabilization particularly well. In fact, I wouldn't say it did it at all. -The app is decent, but nothing remarkable. You also have to set up a dedicated WIFI signal each time you turn on the unit to have it connect to your phone. Thus, if you're leaving from home you'll probably have to disconnect from your existing internet to have it catch this WIFI connection The BAD: -The battery gives me about an hour and a half of use on one charge, even if I'm just using it as a view screen and not recording. However-- this is better than the SJ100 by about 50%, and they give you an extra battery. -There is no good way to get it to connect to a bike without modifying the unit. Sure, you could use zip ties or trust the adhesive, but I can guarantee you that the former is ugly and the latter is absolutely going to fall off. I chose to literally screw it into my bike fender and bolt it on, but I'm sure that a good epoxy would also be an option. -The waterproof housing is pretty tough to open. Like, it's a real pain. And when you have to open that up to change the batteries, it does get pretty obnoxious. In all, I ended up bolting it directly on to my bike tire guard (literally drilling through one of the mounting bases to do it), but that worked great for me. It stayed exactly where it should, and there really wasn't much "shake" from that application. Definitely ended up picking up mostly tire noises, but the picture was fairly good quality throughout. I thought that this was a good solution as a rear camera, and indeed it is! But there are still some silly hoops you have to jump through for these budget solutions. I would LOVE a version that uses bluetooth signals instead of dedicated WIFI, so that I don't have to disconnect from my home WIFI to use it. The picture quality is good enough, and I thought it did remarkably well for night rides. In all, this is an above-average product for use on a bike. I ended up using an old iPhone as a dedicated screen mounted to the bike (and not having it auto-connect to any other WIFI signals).

Bought this SJCAM 4000 wifi with two extra batteries and a few accessories a week ago to take my walks with my dog, my bike rides, and to record my dogs acting silly with each other in the house. It comes with one battery installed in the camera and two extra batteries. I suggest purchasing the dual charger for the extra batteries so that you will have extra batteries available because the first battery only lasts a little over an hour. This is my first action camera and I truly like it for what it was purchased for. It's lightweight and do not require a masters degree to figure out how to operate it. It's easy to use. It's Wifi which allows you to use your phone to remotely operate the camera while taking pictures or video. You can adjust the view so that you don't have to view everything with a wide fish eye effect. I'm not able to compare it to the GoPro because I've never owned one. I will say this SJCAM takes great pictures and videos and can be purchased at a reasonable price. Another plus is it comes with a few accessories and two additional batteries. There are concerns about it being authentic. Mine came with a hologram sticker where there was a scratch off with a code underneath which was inserted on the SJCAM website and said to be authentic. It also was able to be synced with the SJCAM app on my SG5 phone. Fast shipping and great packaging. Pros: Can be used as a webcam Can be used as a dashcam Lightweight Easy to use Attaches to arm, head, helmet, chest, belt, surfboard, handlebars, your dog, on a tripod,etc with the right accessories. Cons: Sound quality is subpar in the waterproof case. Very muffled Sound quality is not good without the case. Can purchase (Rob Nunn from Youtube says = Add a Lav or Lapel Mic like the Audio Technica ATR3350 and a seperate audio recorder like the Zoom H1) It gives the SJCAM 4000 Wifi a good sound recording. I am pleased with my action camera and will enjoy taking pictures and videos of many life events.

This is a very good camera for amateurs like me and maybe even for professionals. I used it at the beach, in the salty water, in the pool and in the air (on a zipline). Pros: -Good picture quality -Good battery life -Easy to operate (with the buttons or connected to phone) -Updates the time on the device when connected to smartphone -Pictures and movies capabilities underwater. It even has an underwater mode, which I didn't use, but I made great pictures. -Great case for underwater use. I read some reviews about the camera not being able to pickup sounds when in the waterproof case. But in some situations it recorded some sound (good enough to hear water or your voice sometimes) Cons: -Doesn't have a small internal battery to keep settings (for example the time), when replacing the battery while in the action all pictures taken after that have the default time (1 januari 2016 or so). For me this was a problem, because I didn't want to use the camera with my phone while snorkeling as the camera is waterproof and my phone isn't. This is why I removed 1 star. -the device is a little slow to respond when using the buttons to operate -downloading the pictures is a hassle when using the provided app (android), you have to select each picture/movie separately ->workaround is to remove your sdcard and place it in you pc/laptop -gets very hot and drains the battery when downloading the pictures using the provided app Even with these cons (most of them have a workaround), the only real con for me was the date being reset every time the battery was replaced.

Update : Returned the item and received a refund for bought item and return postage . SJCAM have offered a free of charge replacement (just waiting for delivery). Will post to relate my opinion . Update : Just received the FOC replacement . Everything working fine this time . Easy to access and use setup interface . So far quality seems good, the real test for me will be when it is mounted on my motorcycle . Accessories included are minimal so probably a good idea to buy an accessory set . I updated my star rating to 3 based on the above So now that I have found my way around the cam I can start shooting and give a further update . Final update I have now had a chance to test the camera properly . Good Video quality on the move both in the car and on my motorcycle . For comparison I used my mobile phone and the camera using the same settings . 720p at 30fps . So pleased I have now upped my rating to 5 star . Extremely fast delivery . As you can imagine I was really pleased . Having read about possible copies on the market the first thing I did was scratch the box to reveal the code and verified my camera on SJCAM site , All O.K. !! Unboxed the camera and got started . Disappointment, unable to get to the set up screen tried a number of times and even resorted to the crash instructions (remove the battery) still nothing . Contacted Amazon, unable to get a replacement as not supplied by Amazon . I have had to return the camera . Decided not to give SJCAM a second chance so am looking at alternatives . All of that said amazingly compact and lightweight even with the waterproof housing .

Muito bom amei!! Super boa qualidade excelente pedido chegou antes do prazo. Maravilhoso estrela máxima veio direitinho e entregou tudo que planeja.

The video quality for this budget camera is not bad if you take into account the cost, in my case I paid about £115. It is not worth more than that in my opinion. The sound quality outside is awful! Indoors with an external microphone it's not too bad. I used to have an Osmo Pocket which was much better quality sound-wise. I'm using this camera for B-roll for my YouTube channel. I don't think I would like to use it as my only camera, but for the price it's ok.

SJCAM SJ4K è un'ottima action cam per gli amanti degli sport e delle attività all'aperto. Offre prestazioni decenti e una buona qualità video, il tutto a un costo accessibile. La qualità delle riprese è sorprendente, con immagini nitide e colori vividi. La SJ4K supporta la registrazione video in 4K, permettendo di catturare dettagli chiari e nitidi. La funzione di stabilizzazione dell'immagine è un altro vantaggio. Questo aiuta a ridurre l'effetto delle vibrazioni e dei movimenti durante la registrazione, garantendo video fluidi e stabili. La SJ4K è resistente e impermeabile, ideale per l'utilizzo in ambienti esterni o in condizioni avverse. Il controllo tramite app è semplice e intuitivo, consentendo di controllare facilmente l'action cam tramite smartphone o tablet. La durata della batteria è sufficiente per le sessioni di registrazione prolungate, permettendoti di catturare tutti i momenti emozionanti senza dover preoccuparti della carica. In conclusione, la SJCAM SJ4K è un'ottima opzione per chi cerca un'action cam di qualità senza spendere troppo. Con prestazioni decenti, funzioni utili e un prezzo conveniente, la SJ4K è una scelta consigliata per gli appassionati di sport e attività all'aria aperta.

Non è a livello delle più blasonate ma svolge il suo lavoro in maniera egregia, 5 stelle per il rapporto prezzo/qualità.