Feature:1. Smart Chip: The ring is equipped with powerful computing power and floating point computing technology to achieve faster operating speed. Meanwhile, to protect the user data and information security, the ring also has a longer transfer distance.2. Motion Monitoring: The smart ring can set up a daily exercise goal of 5,000-10,000 steps, record the number of steps, kilometres and calories at any time, and apply different exercise modes. At the same time, you can open the exercise tracks on the APP to record each exercise tracks.3. Magnetic Fast Charging: It adopts 18mAh capacity Li battery, which can fill up the battery quickly and bring a prolonged battery life. By cooperating with APP, you can check the real time power status at any time.4. Water Resistant: You do not need to take it off in water related scenes such as washing, showering, swimming, etc. It is not affected by sweat, and continuously monitors your body condition under sleep and activity, bringing more convenience to your daily life.5. Exquisite: To meet the need to show off your individual style, the case is frosted to give the product a confident radiance at all times. The warm and transparent resin inner tray ensures the excellence of the product appearance and provides users with a comfortable wearing experience.Specification:Item Type: Smart RingMaterial: Stainless steel, ResinApplication Support: for Android 5.0 and above, for IOS 10.0 and aboveBT: BLE5.1Water Proof Level: IP68Working Hour: 3-7 daysCharging Method: Magnetic chargingApplication: DaringsBT Distance: Approx. 3-5m / 9.84-16.4ftBattery Capacity: 18mAh, li battery (built in).Package List:1 x Ring1 x User Manual1 x Charging CableNote:You can select the size according to the inner diameter