Huadai HD3 MAX 1.45 inch bluetooth 5.1 IP68 waterproof blood oxygen smart bracelet Rated 4.50 out of 5Solution provider APP Topstep Main control chip CPU Realtek RTK8762DK Compatible system Android 5.0 and above ；iOS 10.0 and above Flash Memory RAM：192KB ROM：256KB 128Mb Nor flash Screen […] $29.99 – $32.99Price range: $29.99 through $32.99
