Smart Ring Sleep Calories MultilingualFeatures:The double-layer aviation titanium alloy structure is comfortable to wear and has a slim texture.High-precision sensor for multi-dimensional measurement.IP68 women's inner wear for worry-free use.The device is designed for wireless charging, and the built-in battery stores power for easy portability when going out. It can charge the device independently.The slim design made of titanium alloy has an outstanding temperament.Product Description:Bluetooth: BLE5.0Temperature sensor: NST112Clevel: IP68Gravity sensor: MSA310Standby time: 3~5 dayssensor:HX3605Charging : wireless charging (built-in battery compartment wireless charging base)Packaging accessories: smart ring + standard charging cable + instruction manual