GE SR05 - 16 mAh Sub-Black SpO2

How to Wear: STEP-01 Please select a thin layer without elasticity when measuring Circle the line around the finger. STEP-02 Straighten the thin line and measure its length with a ruler Choose according to the following specifications, Specification Parameter: Material process: Titanium alloy Product weight: 2.5g Chip: Germany Dialog DA14531)-ultra-low power, more durable Heart Rate sensor:Tianyi 3602 Storage capacity: 128kb ROM + 96 Kb RAM G-Sensor: SC7A20 Bluetooth Version: 5.1 Working temperature: 0-50°C Water Proof: 5ATM class waterproof, diving or snorkeling can be worn to support more than 50 meters depth waterproof Battery Capacity: 16mAh Charging method: Magnetic charging Compatibility: Android 5.0 and above; Apple l0S10.0 or higher Operation: The ring has no touch and no buttons; App initiates movement and function tests Multisports: Multiple movement modes Heart rate: App initiates heart rate test/whole day dynamic heart rate trend and data analysis/heart rate data analysis/recent 7 heart rate measurement trend/heart rate history data Sleep: Sleep statistics, sleep proportion, sleep score, sleep analysis, average sleep heart rate and so on Blodoxygen: App initiates oximetry test 7 times oximetry data 7 times Oxygenation trend oximetry historical data Compatible Software: JRing