[Motion Sensing Game] Built-in motion gaming features accessible through the app, please wear the ring and move your fingers. The game follows the action [Gesture Swing for Instant Photography] Innovative design allows you to capture beautiful moments anytime, anywhere. A new height in selfie photography, the smart ring triggers remote photography, making you a professional photographer at ease [Rate Rate Monitoring] Monitor your heart rate anywhere and anytime; open the app to view the heart rate data on the ring at any given time [Sleep Monitoring] The ring automatically monitors your sleep quality when you fall asleep and generates a sleep report to help you develop good sleep habits [Exercise Data] Accurately recording steps, calorie expenditure, distance, etc. Supporting your multiple exercise modes Specifications: Hardware CPU Pixart 2860 Material aluminum alloy Bluetooth Version BLE 5.1 Battery capacity Polymer lithium battery 18mAh with battery protection IC, charging case 280mAh Working Time About 5-7days Charing time 0.5H G Sensor QMA6100P Heart Rate Sensor HX3605 Charging method Charging Case Waterproof Level 5AT Charging Requirement Charging 1A or less Software APP ECTRI Support gesture control somatosensory games. Gesture electronic books. Gesture photo. Gesture brush Tk Function Heart rate detection Blood oxygen test blood pressure detection Remote photography Multiple sport modes Sleep detection (Sleep time, Sleep quality) Step count Synchronous data to APK/APP APP Download Download "ECTRI" from Android market or for Apple store Scan the following QR code and download "ECTRI" Specification System requirements Android: 6.0 or aboveiOS: 11.0 or higher Environmental requirements Operating temperature: 0~45 Storage temperature: -10~55 Working humidity: 5%~95% (non-condensing) Size(mm) 8 circumference 56.9, diameter 18.2 9 circumference 59.5, diameter 19 10 circumference 62.1, diameter 19.9 11 circumference 64.6, diameter 20.7 12 circumference 67.2, diameter 21.5 Package included: 1 x Smart Ring 1 x Charging Cable 1 x Charging Case 1 x English User Manual