Usage Tips:Built-in High-Sensitive GPS Chip: Accuracy within 5 Meters. Beidou GPS Glonass. Fast Global Positioning. To Set Time Zone. GPS Automatic Timing Real-Time Data Ride under Control: M3 can support 9 key riding data displays and help cyclists master their cycling state. M3 is one entry-level GPS cycle computer that meets your daily leisure riding demand USB Rechargeable: USB Reachage with Built-in 400mAh Lithium Battery. Can be charged by any device with the USB DC 5V port. It is normal that the GPS bike computer consumes power much quicker than a traditional bike computer. IPX5 Waterproof: Suitable to use under small to medium rain. Please don't immerse it in the big and heavy raining circumstances. Please tighten the USB cover during the use Full-Screen White Backlight: 1.7-inch Full-Screen anti-glare mono LCD full-screen backlight; Data to be seen clearly in the dark and daytime Mini Body Design: Mini size to hold in one Palm; Convenient to carry with. Besides daily cycling, also suitable for Racing Cycle, RC cars, Motorboat, Canoeing, Drones, etc. outdoor fitness sport