









🚴♀️ Ride Smarter, Not Harder — Track Every Revolution with Magene S3+!
The Magene S3+ is a lightweight, wireless speed and cadence sensor designed for both indoor and outdoor cycling. Featuring 500 hours of battery life, dual Bluetooth and ANT+ connectivity, and IP54 weather resistance, it pairs seamlessly with popular cycling apps and devices to deliver precise RPM data. Its smart power-saving mode and easy installation make it an essential upgrade for serious cyclists seeking reliable performance tracking.





























| ASIN | B087QD82Y6 |
| Battery Cell Composition | Lithium Manganese Dioxide |
| Battery Life | 500 Hours |
| Best Sellers Rank | #6,409 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Cycling Computers |
| Brand | Magene |
| Brand Name | Magene |
| Color | Black |
| Connectivity Technology | Bluetooth |
| Customer Reviews | 4.0 4.0 out of 5 stars (7,184) |
| Date First Available | January 22, 2021 |
| Human Interface Input | Buttons |
| International Protection Rating | IP54 |
| Item Package Dimensions L x W x H | 4.45 x 3.19 x 0.94 inches |
| Item Weight | 8.8 Grams |
| Manufacturer | Magene |
| Model Name | S3+ |
| Mounting Type | Handlebar Mount |
| Package Weight | 0.05 Kilograms |
| Part Number | S3+ |
| Sensor Type | Cadence Sensor,Speed Sensor,GPS |
| Style | 2 Outdoor Cad/Spe Sensors |
S**E
Seem like good value for the price
I bought these as an alternative to the big “G” and big “W” brands. Follow the included instructions to set them up, one as a cadence and one as a speed sensor. They paired easily with my Garmin 1050 head unit and seem to be a better design than the Wahoo pair that they replaced. So far they’ve worked flawlessly. I was impressed enough to buy a 2nd pair for my backup bike.
A**R
No complaints
Does the job, easy install 🤔 overall and I'm a first time sensor user. Durable, rain, sleet snow, No complaints 🤷🏻♂️
J**A
Great quality product, no support. 64 cadence is max
The item itself looks high-quality, but the cadence sensor stops at 64 cadence. I don’t want the app for a software update. I contacted support via email, chat and web form no answer… it also perfectly paired with my Garmin watch. So the product itself is great quality, but it doesn’t work and has no support at the moment.
D**O
Works just as it should, at a fraction of the "name brand" cost.
I purchased the two-pack so that I could use one as a speed sensor, and one as a cadence sensor. I intended to use them with my Garmin Edge 1030 Plus cycling computer and GPS. I was skeptical when I ordered. The Garmin Speed Sensor 2 and Cadence Sensor 2 bundle costs more than twice the price of this aftermarket two-pack. So I assumed something would be lacking. Maybe I wouldn't be able to pair both at the same time (speed and cadence) as I had seen in some reviews. Maybe the speed sensor would require manual calibration. Or maybe they would be substantially inferior quality. None of these fears turned out to be warranted. Unpacking: The two sensors were in one anti-static wrap, and included in the package were two rubberized backing pads, and four elastic band mounting straps (two of each of two sizes). Initializing: After opening the battery compartments, you must remove a piece of packaging that prevents the battery from discharging prior to use. Upon closing the compartments again, one sensor initialized with a green LED, and the other red. The LED color tells which mode (speed or cadence) the sensor is in. It's important to pay attention to which is which so that you install the correct one on the wheel hub, and the correct one on the left crank arm. Initializing the units was easy. If one had initialized in the wrong mode, simply removing and reinstalling the battery will switch it back to the desired mode. Installation: Insert the rubberized backing strip, then strap the speed sensor around the bike's wheel hub, and the other around the left crank arm for cadence. The straps fit correctly. Compared to the Garmin unit, the cadence sensor fits exactly the same. The Garmin speed sensor incorporates a hub form-fitting rubberized housing integrated into the strap. The aftermarket speed sensor does not have the form-fitting housing. Yet it stays secure around the hub none the less. So the Garmin Speed Sensor 2's rubberized housing is a nice touch (at 2x the price), but not necessary. Pairing: On the Garmin Edge computer tap settings, sensors, add a sensor. Select speed for the hub-mounted sensor. Give the bike wheel a spin. The sensor will be displayed with some ID number. Tap that one, and tap add. If you want, go back in and edit the sensor name to change the numeric ID to a name that is recognizable. This is particularly useful if you have sensors on multiple bikes. For the cadence sensor repeat the process: Settings, Sensors, Add a Sensor, Cadence, spin the cranks, then tap the ID of the sensor that pops up. Optionally edit its name so it's recognizable. One thing that I feel is worth mentioning: I expected that I would have to manually calibrate the wheel size. The Garmin Speed Sensor 2, when paired with a new enough Garmin Edge (520, 520+, 820, 530, 830, 1030, 1030+, and possibly others) will auto-calibrate the wheel size. But I assumed that feature wouldn't work with this aftermarket sensor. Nevertheless, I set it to auto calibration mode and went for a ride. After about a mile the Garmin Edge 1030 Plus indicated that auto-calibration of the speed sensor was complete. So to my pleasant surprise, this aftermarket sensor will work with Garmin's auto-calibration for wheel size. Great! Test ride: I took this set for a brief five mile ride, and then looked at the results. There were no drop-outs in cadence other than when I wasn't actually pedaling anyway. Speed is harder to verify since the GPS can calculate speed without the speed sensor. The sensor just makes it more accurate. But there were no notifications of losing a connection to a sensor, so I assume speed was working fine. Certainly the GPS home screen did indicate that both were connected and sending data. The speed and cadence data seemed indistinguishable from when I use Garmin name-brand sensors on my other bike. Comparison to Garmin Speed Sensor 2 and Cadence Sensor 2: I have both the Garmin sensors and these aftermarket sensors. They both seem to work the same; they turn on when the wheel or cranks spin, and shut off a minute or so after I discontinue use. Their estimated battery life is similar too. The Garmin's hub mount is a little nicer, but both are adequately secure. Both are waterproof. Size is similar. And pairing works exactly the same. In my case, I even have both the Garmin sensors and these aftermarket sensors paired to the same Edge cycling computer. When I use one bike, the GPS detects one set. When I use the other bike, the GPS detects the other set. They work the same. The biggest difference is I paid $80 for the Garmin sensors as a set, and less than $40 for these aftermarket sensors as a set. I really think the ability to switch between speed and cadence mode by reinstalling the battery is a nifty piece of engineering. I'll never switch them after initial setup. But it does mean you can buy one, or two, and then decide how you want to use them. One thing I see people ask sometimes: If a GPS detects speed, why would someone buy a speed sensor? There are three reasons. First, if you're using an indoor trainer, you can mount the speed sensor on the rear hub and still get speed data despite the fact you're pedaling away on a trainer in the basement. Second, if you're mountain biking in terrain with steep mountains and tree cover, or if you're riding downtown in urban settings with tall buildings blocking GPS signal, you'll experience fewer drop-outs in speed data. Third, is accuracy. Even if you're a suburban road cyclist like I am, the speed sensor improves the accuracy of speed reporting of the GPS, and also decreases the latency between speed changes and reporting on the device of the speed change. And that's why I have the speed sensor; just to improve the accuracy and latency of speed reporting. Conclusion: At half the price of a set of Garmin sensors, and providing the same sensor information to the GPS, with the same mounting for cadence, and nearly the same mounting for speed, and with similar battery life, similar waterproofness, and identical device pairing with Garmin Edge GPSs, to me it's easy to conclude that buying these at half the price is the best choice. I have both a set of Garmin sensors, and a set of these -- one set on each of my two bikes -- and if I had it to do over, I'd save the $40 and go with two sets of these instead. It could be that these will wear out sooner, though I rather doubt it; there's not a lot that can go wrong with them. There are two reasons I gave four stars instead of five: First, I like the hub-hugging design of the rubberized shroud that comes with the Garmin Speed Sensor 2 better than I like this aftermarket sensor's flat rubberized backing strip. In use, it makes no practical difference, though. But the Garmin design is slightly nicer in that one regard. I don't really feel that piece of rubber justifies a $40 price difference for the set of sensors, though. The other reason for four stars is this: The product listing claims IP67 weatherproofness: dust proof and submersible to 1 meter for 30 minutes. But the packaging and instructions list the weatherproofness as IP66: dust proof, and heavy seas splash resistant. Meanwhile, the Garmin devices are listed as IPx7: no specific dustproof rating, but submersible to 1 meter for 30 minutes. If this device is IP67, it's rated better than the Garmin at IPx7. But if it's IP66 as the packaging and instructions state, it is less weatherproof than the Garmin, but potentially more dustproof. This ambiguity (the uncertainty because the product listing's specifications differ from the specifications on the packaging and instructions) warrant a 1-star deduction. I've seen reviews that suggest the rubber bands that strap these devices into place aren't durable. I haven't had them long enough to have encountered a failure. If I do encounter a failure in the first year, I'll deduct another star. But for now, 4-stars stands.
D**.
Sensor and Wahoo app aren’t compatible, but Magene made good (as well as they could)
Update: Magene did (actually some time ago) offer to make good on this based on my review (money back or credit), so I can’t hold a grudge there. I’ve been through Wahoo app updates and sensor firmware updates since then hoping that this problem would resolve, but it has not. The device itself and the Wahoo app are not fully compatible. But if you find yourself in this spot, Magene will support you. Originally submitted a question, but perhaps better as review. Sensor arrived quickly, was easy to install and pair to phone per instructions. Using Wahoo fitness app in iOS, the sensor appears to give good data for cadence...but the app then no longer acquires speed and distance data...what happened? If I have to choose, I want speed and distance. To be clear, I understand that the sensor can only send speed OR cadence data...the issue is that collecting cadence data from the the sensor is somehow disabling the speed/distance data that the app normally gets from phone gps. Upon further review, the Wahoo app sees this sensor as a speed AND cadence sensor and is looking for two signals. Obviously, the sensor sends only one, and in cadence mode, the Wahoo is looking for speed, too. This causes speed and distance data to be n/a during the ride, even though gps data are collected in the background and available for review later. Don’t know how to remedy this... In further dialog with both Magene and Wahoo, they are pointing fingers. Magene says it’s an app problem and Wahoo’s solution is to buy their more expensive and single-function sensor. Ugh.
C**F
Works well for basic data
I got this for a very basic indoor exercise bike I got without any electronics. I use with a tablet or phone for basic record keeping of cadence and time.
E**A
Es un buen producto funciona muy bien lo estado probando me sorprende funciona mejor que otro que he probado cien por cientos satisfecho funciona con ciclo computador xoss mejor que los vortex
S**O
Lo primero que he de comentar es que antes de comprarlos tenía buenas referencias de este producto por compañeros de grupeta y tras cuatro meses de uso puedo decir que ciertamente es un buen producto. La colocación de los 2 sensores resultó sencilla y segura gracias a las bases de goma (una para la biela y otra para el centro del buje) que consiguen un buen apoyo, además las anillas de goma han logrado una buena sujeción. La configuración a sensor de cadencia ó velocidad es sumamente fácil ya que sólo hay que sacar la pila y volverla a introducir para que cambie de un modo a otro. La sincronización con mi ciclocomputador igpsport ha sido rápida. Su funcionamiento es bueno, al inicio tarda un par de segundos en dar señal, luego transmite datos correctos. El único problema que he tenido es que la pila de uno de ellos sólo me duró 20 km, por seguridad cambié las pilas de ambos y tras 4 meses no me ha ocurrido ninguna incidencia más. Conclusión: un buen producto con una relación calidad/precio satisfactoria.
R**A
Nice
F**S
Fait le boulot ! Pas trop cher et précis !
E**B
Instalei na bike de spinning, funcionou bem fixando perto do eixo, na roda não mediu direito. Usei abraçadeira de velcro e fixou perfeito, minha bike tem uma roda de 19kg. Já a entrega, comprei o produto que não informava que se tratava de uma compra internacional, Amazon deveria cuidar melhor disso, eu não teria comprado desse vendedor se tivesse a informação de compra do exterior.
I**T
Garminのサイコンに問題なくペアリング出来ます。 アプリGarmin connectにはペアリング出来ませんが、逆に出来ない事で、センサーを付けたまま後輪やディレイラーの調整・メンテナンスでセンサーを付けた車輪を回しても走行距離を記録しないので良いです。 Garmin純正スピードセンサーは、ホイールを回すと、サイコンの電源が入ってなくても、〇〇km走りましたとガーミコネクトに表紙されストレスに感じてました。
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5 days ago
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