Feature: 1. 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. 2. Comprehensive Health Monitor: With advanced features like sleep tracking and blood oxygen measurement, this health monitor offers detailed insights into your well-being. Tap to view sleep duration and blood oxygen levels, ensuring you stay informed about your health. 3. Innovative Health Fitness Rings: These health fitness rings seamlessly integrate for WeChat and for apple Health, allowing you to track your steps and sync with your favorite health apps. Enjoy multilingual app support for a personalized fitness journey. 4. Dynamic Sport Health Ring: Experience the future of interaction with this sport health ring, which enables gesture controls for TikTok and other apps. Effortlessly browse videos, scroll pages, and shop online without touching your phone screen. 5. 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. Specification: Origin: Mainland China Size:Size: 8 (inner diameter 18.2mm), 9 (inner diameter 19.0mm), 10 (inner diameter 19.9mm), 11 (inner diameter 20.7mm), 12 (inner diameter 21.5mm) 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" Material: stainless steel + glue filling process Main chip model: German Dialog DA14585) - ultra-low power consumption Body storage capacity (ROM+RAM): 128kb ROM + 96 Kb RAM Sensor: SC7A20 Bluetooth-Compatibleversion: 5.1 Support APP-side GPS data: Yes Heart rate sensor model: Tianyi 3918 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 Compatibility: Support Android 9.0 and above; for apple IOS 10.0 and above Compatible software: Jring Support OTA (OTA upgrade): Support Fota upgrade APP: Jring Packaging size: 83*82*28.5mm Gross weight: 65g Note: The charging case is not included! 1 X Smart Ring 1 X Charging Cable 1 X Instruction Manual