YUEHISY Smart Ring - #7

Specification: Item Type: Smart Ring​ Material: Stainless Steel+Resin Battery Type: Li Battery (Shipped with Built in Battery) Battery Capacity: 18mAh Waterproofing Level: IP68 Compatibility: Supports for Android 8.0 and above, for IOS 12.0 and above Bluetooth​ Version: 5.0 Bluetooth​ Distance: Approx. 3 - 5m / 9.8 - 16.4ft How to Use: Follow the instruction manual PackageList: 1 x Smart Ring​ 1 x Instruction Manual 1 x Charging Cable Notice: The size can be selected based on the circumference