SKARLIE Speedometer Bluetooth Wireless Computer Review

[ Speed & Distance ] Fix the cycling speed sensor on the hub of your bike by rubber band or zip tie (both provided). Track and capture real-time speed and distance you have traveled outside or indoor. [ Bluetooth 4.0 & ANT+ ] Compatible for all kinds of equipments and APP which support Bluetooth or ANT+ via speed data, like GPS cycling computer Wahoo Strava Zwift Map MY Ride and more. [ Necessary & Valuable ] Probably not 100% needed if you have a bike computer but could be more accurate especially in areas with poor GPS signal. Also can connect to interesting app such as Zwift Oculus VR when you stay at home. [ Accurate & Professional ] Rotating speed sensor for a few seconds before connecting. When your riding starts to stabilize, MPH will be more and more accurate. DO NOT fix on the crank arm of your spin bike. [ Warranty ] Enjoy your cycling! No matter installation / using question / quality question and others, customer service center at your service all the time:).