[16 Hours Super Long Battery Life]The 600mAh rechargeable lithium battery can be used for up to 16 hours, longer than G+, keeping you away from the worry of running out of power (please note that battery life may vary depending on the actual usage environment). Attention: First time positioning will take 3-5 minutes, please make sure you are outdoor. IP67 Waterproof: IP67 waterproof protection allows bike computer work normally in rainning day. You can go your riding in Rainy and Sunny day. and support map navigation, letting you see the riding track on the map page, and you can pinpoint your position while riding, which will bring you a lot of convenience.Every route you ride can be fully displayed by ReAR. Quick release design, cord-free and easy to use, multiple pressing methods, stable and secure Colour:Black Material:ABS Package Contents: 1x Bicycle wireless smart computer 1x extension bracket 2x anti-slip pad 2x rubber band 1x fixed base Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.