The smart ring perfectly integrates advanced technology and fashionable design It is not only a decoration, but also an intelligent assistant at your fingertips, bringing you unprecedented convenience and fun Through built-in sensors and artificial intelligence technology, the smart ring can recognize the user's movements activate body sensation anytime and anywhere, and enjoy convenient finger pleasure The smart ring monitors your health data, heart rate, blood pressure, and sleep quality are all available Caring about your breathing and heartbeat, enables you to keep track of your physical condition Specifications: Size 8: inner diameter 18.1mm, circumference 56.9mm Size 9: inner diameter 18.9mm, circumference 59.5mm Size 10: inner diameter 19.8mm, circumference 62.1mm Size 11: inner diameter 20.6mm, circumference 64.6mm Master: 6621DQ Capacitive touch IC: 816D/T G-sensor: 7A20E Heart rate blood oxygen sensor: HS3301 Battery capacity: 17mAh Charging method: magnetic charging Antenna requirements: ceramic antenna Material: metal middle frame plastic bottom shell Power on: After the ring is fully charged, disconnect the power supply and automatically turn on Power off: After the power is exhausted, it will automatically shut down Bluetooth connection: Search Bluetooth, select to connect, the green light flashes three times when Bluetooth is connected (1 second interval) Low power shutdown: Shut down when the power is less than 5% OTA upgrade: Support APP control device OTA Indicator definition: 1. The red light is always on when the charge is not full, and the green light is always on when the charge is full 2. The green light flashes three times when the Bluetooth is connected (1 second interval) 3. The red light flashes twice every minute when the power is low" Heart rate measurement: Support heart rate measurement and transmit the value to the APP Blood pressure measurement: Support blood pressure measurement and transmit the value to the APP Blood oxygen measurement: Support blood oxygen measurement and transmit the value to the APP Automatic health monitoring: The ring has active measurement logic Sleep monitoring: Support the user's sleep data Exercise measurement: Calories, steps, mileage Package included: 1 x Smart Ring 1 x Charging Cable 1 x English and Chinese User Manual