cross-border w2 high-end alloy smart bracelet heart rate blood pressure sleep monitoring waterproof sport step counting smart watch, Slivery;brown

brand youmi item no. 2019 model w2 time to market december 2019 source category spot applicable platforms android platform apple ios platform applicable people business elderly screen size 1.3 inches appearance size 1.3 material zinc alloy battery capacity 500 product weight 100 wearing method wrist strap mode of operation touch interface usb 2.0 wireless distance 10m and above communication function not supported wristband material silica gel processing method labeling processing and prin