GPS Bike Computer Wireless Waterproof GLONASS ANT+ Sensor and BT Compatible Offline Maps Gyroscope 24-Hour Battery Life 2.4-inch APP Touchscreen Bicycle Computer Experience advanced Cycle data tracking with our GPS Bike Computer. It's waterproof, compatible with ANT+ sensors and BT5.3, and features offline maps for seamless navigation. Features: Functions:Data GPS, Distance, Speed, time, Temperature, Altitude ,Gradient,Graphical data,Riding Posture,Training mode,Virtual Rival,Off-line Map,Lap,Interconnect with phone,Interact with cyclists,Smart Notifications,Upload Records,Colories,Strava Sensor Support: Speed, Cadence, Speed& Cadence 2 in 1 sensor, Heart rate, Power Automatic Backlight: Automatic sensitivity to light Waterproof design:  IPX7 ensures durability in all weather conditions. Long-lasting: battery life of 24 hours for extended Cycle adventures. Specifications:  Model: A/B/C (Optional) (The page display is different, the function is the same) Language: Chinese,English,Traditional Chinese,Japanese,Russian,French,Deutsch,Portuguese,Spanish Screen: 2.4-inch color touchscreen, 240x320 pixels  Position: GPS, BDS, GLONASS  Wireless: BT5.3/ANT+  Waterproof: IPX7  Operating Temperature: -10?? to 50??  Extended Map: YES APP: link-s Battery: 5V 500mAh Battery Life: 24 hours  Charging Time: 3 hours  Storage: 256MB+16G SD cord (Included) Size: 8 x 5 x 1.6cm / 3.15 x 1.97x 0.63in Weight: 78g/2.8oz 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