Smart Ring Health for Women & Men Smart Health Ring Fitness Continuously Records

Specification:Item Type: Smart RingMaterial: Aluminum alloy ceramic electronic componentsRing Battery Type: Lithium battery (built in)Ring Battery Capacity: 20mAhRing Battery Life: About 7 daysRing Charging Time: 45 minutesCharging Case Battery Type: Lithium battery (built in)Charging Case Battery Capacity: 350mAhColor: SilverRing NumberApplicable Finger CircumferenceUS SizeInner Diameter17 52.12mm/2.05in 5.5/6/6.5 17mm/0.67in18 55.26mm/2.18in 7/7.5 18mm/0.71in19 58.4mm/2.30in 8/8.5 19mm/0.75in20 61.54mm/2.42in 9/9.5/10 20mm/0.79in21 64.68mm/2.55in 11/11.5 21mm/0.83in22 67.82mm/2.67in 12/12.5 22mm/0.87inHow to Use:Before use please scan the QR code to download the APP and follow the instructions. Power on method: Self start when fully charged.PackageList:1 x Smart Ring1 x Charging Case1 x Charging Cable1 x InstructionsNotice:When using the sensor should be tightly pressed against the skin to achieve the best effect.