Weight: 4.4g.
Main functions: Tracking Steps, distance, calorie calculation, heart rate, blood oxygen saturation, pressure, sleep and multiple sports modes.
Compatibility: Android 5.1 or above, iOS 8.0 or above.
Charging mode: Magnetic Charging Cable.
Characteristics: dust proof & waterproof level.
Free App subscription. Supports Android 5.1 or above and iOS 8.0 or above.
Chipset: BlueX Micro
App: QRing
Battery type: Lithium polymer
Capacity: 17mAh
Charging mode: Magnetic Charging Cable
App software features: Multiple sports modes
Charging time: About 1H
Life time: 5-7 days of use and 15 days of standby
Product Material: Stainless steel
Giftbox size（L*W*H）MM: 75*75*43MM
Giftbox Packing weight（g）: 70.25g
Size/Perimeter: 8#/56.9mm 9#/59.5mm 10#/62.1mm 11#/64.6mm
How to know which size is right for you:
1.Find a thread without elasticity.
2.Wrap the tread for one circle around the finger where you wear the ring.
3.Straighten the thread and measure the length of the thread, and this length is about the perimeter of the ring for you.