Bike Computer GPS Wireless Waterproof ANT+ Sensor and BT 2.3in Altitude Gradient Heart rate Compatible Strava APP Bicycle Computer This GPS Cycle computer can receive real-time Cycle data from heart rate monitor,speed and cadence sensor, power meter via ANT+ ,and save these date as a fit file .You can sync Cycle date to STRAVA by OneBiker app.GPS and BEIDOU Dual Positioning, Auto Backlight and Time Calibration Features: Functions:Data GPS, Distance, Speed, Time, Temperature,Altitude,Gradient,Lap,Strava Sensor Support: Speed, Cadence, Speed& Cadence 2 in 1 sensor, Heart rate, Power Automatic Backlight: Automatically turns on 30 minutes before sunset Waterproof design:  IPX7 ensures durability in all weather conditions. Long-lasting: battery life of 28 hours for extended Cycle adventures. Specifications:  Language: English Screen: 2.3 inch FSTN segment  Position: GPS&BDS Wireless: BT/ANT+  Waterproof: IPX7  Extended Map: No Lap count: Yes Battery: 5V 500mAh Battery Life: 28 hours  Charging Time: 2 hours  Storage: Can store 80 hours of continuous Cycle data Size: 8 x 5 x 1.6cm / 3.15 x 1.97x 0.63in Weight: 64g/2.3oz Package list:  1 x Bike Computer  1 x Base  1 x Base Silicone Pad  2 x Leather Loops  1 x Type C Charging Cable  1 x User Manual