Store lightly independently, without mobile phones and code gauges, can be used as independence Sports equipment storage sports data Blood oxygen detection science movement, heart rate arm strap provides blood oxygen detection function. In the pedestrian app, you can see your own blood oxygen level intuitively Colorful heart rate indicates high efficiency training. According to the real -time heart rate data, the indicator light display different colors to help you efficiently scientific training Ultra -light design is comfortable and indifferent, bringing you a comfortable sports experience The arm band provides speed/distance estimation function. It can detect frequency and estimate the speed and movement distance based on the information such as steps, height, gender and other information RF transmission range: 60M Battery type: can be lithium battery Battery battery life: about 60 hours Wireless transmission protocol: Bluetooth 5.0 and Ant+ Waterproof level: IP68 Compatible with for The product appearance and printed words depending on the batch, but this does not affect use Colour:As Shown Material:ABS Package Contents: 1 x Monitors 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.