Versatile Smart Ring: This smart ring supports multiple sports modes and provides real-time heart rate monitoring. Simply tap to display your last reading and initiate new tests, making it an essential companion for fitness enthusiasts. Comprehensive Health Monitor: With advanced features like sleep tracking and blood oxygen measurement, this health monitor offers detailed into your well-being. Tap to view sleep duration and blood oxygen levels, ensuring you stay informed about . Innovative Health Fitness Rings: These health fitness rings seamlessly integrate for for WeChat and for Health, allowing you to track your steps and sync with your favorite health apps. Enjoy multilingual app support for a personalized fitness journey. Dynamic Sport Health Ring: Experience the of interaction with this sport health ring, which enables gesture controls and other apps. Effortlessly browse videos, scroll pages, and shop online without touching your phone screen. Convenient Sleep Ring: Capture perfect moments with the sleep ring's remote photo-taking feature. A simple gesture triggers the camera, allowing you to take stunning selfies and photos with ease, elevating your photography experience. Thickness: 2.5mm Weight: about 3.4g Waterproof: 5ATM waterproof, can be worn for diving or snorkeling, supports waterproof depth of more than 50 meters Body storage capacity (ROM RAM): 128kb ROM 96 Kb RAM Sensor: SC7A20 Bluetooth-Compatible version: 5.1 Support APP-side GPS data: Yes Battery type: polymer pure cobalt battery Working temperature: 0-50 Battery capacity: 18mah Charging time: 2 hours Theoretical standby time: 16 days-20 days Usage time: 3 days-4 days Charging: Charging box Support OTA (OTA upgrade): Support Fota upgrade Size:#8(inner diameter 18.2mm) Colour:As Shown Material:ABS Package Contents: 1 * tracker 1 * charging case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.