The Best Cover

BLUETOOTH SMART (BLE 4.0) TRANSMISSION - Supports heart rate monitor. It is also able to accurately your cadence and speed data by connecting to Shanren Cadence sensor and Speed sensor (not included). DOUBLE STAR POSITIONING - GPS+GLONASS Navigation ensures accurate positioning of your ride. DETACHABLE WARNING LED LIGHT - 300 lumens with adjustable brightness; color can be changed according to your riding speed, safer and more efficient. 80 HOURS BATTERY LIFE: DISCOVERY GPS Cycle Computer can work 80 hours for one charge, which is longer than the ordinary bike computer. NO MAGNETS, EASY TO INSTALL - Simply attach the speed sensor to the hub and fasten the cadence sensor to crank arm and there you go. MULTILINGUAL APP - You can share data via Strava, Facebook, Twitter, Instagram besides data record. ACRYLIC OPHTHALMIC LENS - Scratch-resistant, Abrasion proof, more Transparent than PC CD FINGERPRINT BUTTON DESIGN - Convenient for night riding operation.