Review on CYCPLUS GPS Bike Computer, Wireless Cycling Computer, ANT+ Bluetooth Bicycle Computer Mini Speedometer Odometer Waterproof MTB Tracker, Rechargeable With 2.5 Inch Screen For Bikers Outdoor Cycling by Jon Manning

Not a great computer overall. The display is dim, and difficult to read in daylight, you'll need to run it with the back light all the time. Luckly the battery does seem to last. 3, 2 hour rides and only one bar down so far. Setting the time is cryptic, plus or minus whole hours from an arbitrary time zone thats not listed. Once I found the hour setting -4 ? , it was still 15 minutes off. You can't adjust the minutes. No idea why they couldn't have a regular Hr:Min setting like other devices. The worst issue by far is the data refresh rate. It only seems to update heart rate and rpm every few seconds. Other modern computers update almost instantly. Also, it says Im going 4mph when im standing still. I have excellent data service and a top tier phone. I'd say save your money and buy something without the drawbacks. As soon as the higher end computers go touch screen, it'll be a backup, or sold. If i had anything else on hand i would send it back for sure.UPDATE: Adding to the above, the battery level indicator does not work well at all. At 2 out of 3 bars remaining it shut down on me MID RIDE. Contacting the seller, this thing is heading back asap.