YS SY Bicycle Speedometer and Odometer Wireless Waterproof Cycle Bike Computer with LCD Display & Multi-Functions

My father-in-law recently purchased an electric scooter and he wanted to know how fast he was moving up and down the sidewalk.At times he has a hard time installing small items like this but he didn’t have any issues doing it by himself.He said it’s been pretty accurate, and the battery life has been really good as well.Display size is good and he’s able to read and understand the screen. Good item for a part time speedster.

Update: After messing with this thing for several weeks I find it to be completely unreliable. It'll read great one day and the next day it will vary between showing zero MPH and 15 MPH. I don't know if the cell phone that I carry interferes with the wireless signal or what but this thing does not work well at all. What I wrote below was how I felt in the middle of my trials.The physical installation is not difficult - tie wraps and such. No big deal. What is difficult is working out the distances along with the particular configuration of your bike.The distance from the computer to the sensor is critical. You get beyond or even close to the 60cm distance from the computer to the sensor and you will get very erratic readings or no readings at all. Same with the 3mm distance between the sensor and magnet. 3mm is about 1/8 of an inch!I have a trail bike with wide forks. That presented an issue in getting the sensor close to the magnet AND also having the sensor not too far away from the computer. I had to try about 8 or 10 configurations where I finally ended up with the sensor tie wrapped on the INSIDE of the fork up close to the brakes (had to keep within the 60cm distance from sensor to computer) which allowed me to get the sensor and magnet within the 3mm distance as well.Once I got those distances happy and figured out how to mount the sensor in the wide fork spacing, everything worked great! Nice features on the computer and you can tune the wheel diameter to get the mileage distance more accurate.

Unbelievable fast delivery thanks

For the money, this unit is great. I've only had it installed a few weeks and it has performed trouble free. Installation was simple (aside from a manual with the smallest font on earth. The display is clear. For a simple no-frills speedometer/odometer it seems like a good choice.

My nephew loves the speedometer.

YouTube saved the day for instructions. No user friendly, not even for these YouTubers, but it's 80% programed for what I need.

These are pretty cool I got like six bikes got one on every bike no complains if you are manual pedal fewer electric a few are gas powered the gas powered ones have to have a direct wire running down to the sensor the wireless ones pick up the spark plug fire and will throw you off might be going 20 mph just sitting an idling

Might be fine if it were going onto the front forks. But considering we're putting it on the rear for a trainer's use, it won't pick up the results of the sensor on the handlebars. Apparently, it needs to be VERY close to the sensors in order to actually pick them up. Didn't try it on the front forks, but my guess is that if you were using it on front wheel and mounting on handlebars as instructions say, it would be able to pick up the sensors. I can't comment much on the rest of the features or how accurate they are, since I didn't put it where recommended.