[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 depending on the actual usage environment). Attention: First time positioning 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 . and support map navigation, letting you see the riding track on the map page, and you can pinpoint your position while riding, which 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.