SOON GO Wireless Waterproof Bike Computer, Bicycle Speedometer Odometer with Large LCD Green Backlight, Auto Sleep & Wake-Up, Accurate Multi-Function Speed Tracker for Mountain, Road & Folding Bikes

Arrived very quickly. Installed easily with non-destructive means so you can always change your mind without damaging your ride. Does have a limited range so getting the transmitter/receiver positions just right was challenging but not insurmountable. Mounted well - even after I screwed it up (upside down) and had to try several positions to get it in range. Still, it works great, I didn't bother with any fancy calculations for wheel size and when tested on a known distance it was well within any reasonable accuracy need. Easy to read (haven't quite got the backlight going yet but it would just suck battery anyway). The low cost of this unit makes it a perfect choice for anyone that just wants to give it a try in tracking time and distances spent with their bike with the added advantage of not being too worried about it in those sketchy situations you inadvertently find yourself in (cause your a knucklehead anyway). Nice extra flashlight in the same mode - use it and lose it, no big loss - and who doesn't love a few extras? Haven't truly researched it yet but replacing the batteries may be a large percentage of the total cost. Get it and if you love it upgrade to the GPS unit for your $5k Specialized or get a spare one of these for your Huffy.

I loved this bike computer ... at first. It was easy to set up and easy to install. I love knowing how far and how long I've ridden since biking is my main source of exercise. However, after two weeks the device simply stopped working for a few days. Then, out of nowhere, it started working again for another two weeks. Two days ago, however, the device stopped again on a long ride and hasn't started working again. I've tried everything including multiple resets and checking the receiver and battery on the bike wheel. My guess (and it's only a guess) is that the cheap plastic battery casing on the back of the device does not hold the battery in a snug way. That would explain the numerous times I've had to complete re set up the bike computer after it randomly shuts off and turns back on (yet another problem). This product had a lot of promise but doesn't last unfortunately. I'm going to have to spend much more money to try and get something that works.

I’ve been looking for an inexpensive bike speedometer as I’ve gotten into bike packing on my vintage steel bike. There are many sketchy ones on ebay so that led me here to this one. This one didn’t look funky like some knockoff and is surprisingly waterproof. Upon opening the speedo, I was impressed with the packaging and the quality of the product. Honestly, it feels sturdy and robust. It’s not lightweight cheap-o plastic from china which made me EXTREMELY happy considering the low price i paid compared to other meters out there. I absolutely love this product. The only two things I wish were different would be that it uses a more widely accepted battery for the sensor like a AAA or AA instead of an A27 but I haven’t had to change it for a long time so it’s a minor concern. The other thing I would change would be that it attaches via zip ties. I wish it would be some rubber attachment or something but again, for the price it is more than enough to attach it and looks clean when they’re cut down. Overall I highly recommend this bike speedometer for the price. You just can’t beat it and it’s fulfilled by Amazon so if anything ever does happen… (nothing should happen)… you can always get it worked out. Pros: - Sturdy - Easy set up - Waterproof - Looks clean - Accurate - Durable Cons: - The battery for the wireless detector is an A27 I think… would love for a AAA but oh well…. - It attaches via Zipties

UPDATE #2: Well, the battery swap only worked for one ride. I messaged the seller again and was sent a code so I could purchase the speedo unit again for free. I installed all the new components and it's working great. Speedometer is accurate as well as the odometer. Very happy, hope it works long-term this time :) UPDATE: the seller responded and asked me to swap out the battery and reset the unit. I did that and the MPH output is back to normal. I still need to tweek the tire circumference setting to get the distance reading to be more in line with the god phone app. But it was only a couple tenths off rather than 4 or 5 miles off when it was misbehaving. So I’ve changed my rating from 1 to 4 stars. Then it stopped working correctly a couple days ago. The MPH output started flickering random numbers that had no correspondence to how fast I was going. The mileage recorded was also wildly inaccurate as I also have an app on my phone that I use for the total miles and ride time. I just like being able to keep track of how fast I'm going while I'm riding, hence the speedo. The documentation suggested that the sensor might be loose. Nope, both that and the magnet were fine. I took out the battery to reset the unit and put the wheel size back in. Another ride today yielded the same wacky results. I messaged the seller about it since I can't return it to Amazon, but I'm assuming I'm probably SOL. Buyer beware!

I’ve only had it for a day. I’ve ridden about 8 miles with it. I used the tire size chart included with the directions to set the tire circumference, and it has been remarkably accurate, as I’ve compared it to GPS data provided by my phone. The display is legible while riding and provides all the information you might need. I may change my rating if it doesn’t continue to perform, but as it stands I’m delighted. Actually, at this price, even if it only lasts a few months it will have been a good deal. This is my commuter bike, so after a while all the data will be the same… speed, distance, etc. At that point, if it breaks, I might not even feel like replacing it. Bonus thing about the cheap price: if it gets stolen or vandalized, oh well. Not a big deal. Other reviews have mentioned that the head unit rattles. It does rattle… that is probably the motion sensor switch that turns the unit on automatically when you begin riding. You cannot hear any rattling while actually riding. Others have mentioned that the instructions are bad and the unit is hard to install. The instructions aren’t great, but if you understand the concept, installation is super easy. I have included two pictures of how I have mine mounted on my Trek bike in case it helps. It’s not clear from the instructions, but you must mount the fork unit on the side of the fork, not on the inside of the fork (the spokes side of the fork). See picture. Once mounted, it feels very solid. I don’t think it’s going anywhere. The only other installation issue I had was I mounted the head unit bracket on the handlebars upside down (or, I should say, rotated 180 degrees). That makes the computer mount upside down. Fortunately, some extra cable ties were included so I just snipped the cable ties off, rotated the bracket, and zipped it back on. The picture I included shows the correct orientation for that bracket. I would say, at this very low price, you should go for it. There’s not a lot of risk here. And I’m delighted. EDIT: After a few weeks, I got tired of the cheap toyness of this and ended up buying a real bike computer that could track my rides and upload them. No harm, no foul. It was cheap and it gave me the information I wanted. Now it lives in a drawer.

Very good product!

For the money, it’s ok. All I wanted was to track my miles. Instructions are terrible and to get mechanism correctly on wheel was a challenge. Installed it but rode with my phone GPS on. The chart in the instructions is way off for my bike. I just kept changing tire diameter by trial and error. I have it almost spot on but it’s fine. You get what you pay for and I’m not sure what’s going to happen when battery goes low. Doesn’t state anywhere in directions if there is an indicator. Dealing with it but won’t buy again.

This wireless computer was much easier than the hard wired type computers are to install. The video really helped although, it shows the install of the magnet and sensor being installed closer to the axle. My preference has always been “Higher Is Drier” in case you hit wet areas. I installed the magnet about 2” below the top of the rim of the wheel then aligned it with the sensor closer to the top of the fork as you would normally do. Calibrated the computer, set all functions (very easy setup) and took the bike for a spin with my wife on her bike. Cross referenced her computer with this one and both were to close to even mater on distance and speed. Everything works perfectly. Great product at a very good price plus the shipping is fast. Buying another as a backup so I’ll be ready when the time comes for another one.

Wasn’t too hard to set up, but the directions were suppose to be for this model and another one combined so it was slightly confusing. It’s in my outdoor bike, I have inside for winter on a stand so it has to be on my rear tire. But for it to work the screen needs to be close by, so it is on my top frame close to my seat. This makes it hard to read while I’m biking and it seem to cut in and out on the speed. Seen as I am stationary at this time it is hard to judge if it is still keeping track. I will Hopefully be able to test out better in summer.