It's time to equip yourself with a "GPS". Wired to wireless is not a dream GPS positioning, 8H battery life, USB charging, IPX5 waterproof, backlight level 1, altitude. Beidou GPS Glonass fast global positioning with accuracy within 5 meters, time zone can be set; GPS automatic timing. 1.7-inch full-screen anti-glare monochrome LCD with full-screen backlight; dark and daytime data are clearly visible. M3 can support the display of 9 key riding data to help the rider master the riding status. M3 is an entry-level GPS cycling computer to meet your daily leisure cycling needs. Can store 30 riding data records Long press the right button to view historical data. You can also exit the historical data page by long pressing the right button. Note: M3 does not support track storage and data upload to platforms such as Strava. USB connection Built-in 400mAh lithium battery, can be charged by any device with USB DC 5V port This is normal GPS bike computer consumes power much faster than traditional bike computer. Suitable for use under light to moderate rain Please do not immerse it in heavy rain and heavy rain environment, please tighten the USB cover during use.