AROAQ SR09 - Smart Ring IP68 Waterproof Heart Rate Monitor

How to choose your size - Measuring Finger Method Step 1: When measuring,please choose a thin,non-stretchy wire and wrap it around your finger and mark it with a pen or other tool. Step 2 : Straighten the thin wire and measure its length with a ruler and shop against the ring specifications bove. Warm Reminder : Typically, sizes 8 are suitable for women and 9-12 are suitable for most men's sizes. Please measure your finger size before purchasing to avoid inappropriate size. Product Parameters: CPU: Dialog DA14585 Waterproof Level : IP68 5ATM Waterproof APP : Jring Material : Stainless Steel Color: Black,Silver, Gold Bluetooth : Bluetooth 5.1 Size: 8.9.10.11.12 Operation : Ring Touch Battery capacity:16mAh Charing time:2H Thickness 2.8mm Width: 8.2mm G Sensor:SC7A20 Heart Rate Sensor:HX3918 Waterproof Level:5ATM IP68 Charging Requirement:Charging 1A or less Compatible System：Android 5.0 or Above、IOS10.0 or above Notes: 1.After receiving the ring, please use the charging adapter to charge the ring for more than 2 hours.