S20 sleep smart bracelet $ 22.39 Compatible platforms: iOS, ANDROID Applicable people: business, adult, fashion, public Screen size: 1.28 inches Main body: plastic + zinc alloy Battery capacity: 170mAh Body memory: RAM128KB ROM32Mb Wearing style: wrist strap Wireless distance: 5m (inclusive) -10m (inclusive) Additional functions: health monitoring, information push, smart reminder, sleep analysis, step counter
