Feature: 1. 【Health Tracking】—The smart fitness tracker ring monitors your heart rate, blood oxygen, blood Pressure, sleep quality, step count, and calories at any time. Stay informed about your health effortlessly.Comes with a portable charging case. 2. 【Sleek and Comfortable】—Combining elegant design with durable materials, this sleep tracker ring is lightweight, fashionable, and comfortable. Compatible with Android/iOS, you can easily check your data anytime with our free forever APP. 3. 【Perfect Gigt】—R8 Ring is the ideal present that will make your friends and family feel special and appreciated.Whether it\u0027s a Birthday, Valentine\u0027s Day, Mother\u0027s Day, Father\u0027s Day, Thanksgiving, Christmas, or New Year, this is the perfect choice. It\u0027s also an excellent gift for weddings, graduation ceremonies, and housewarming parties. Specification: Features: 【Health Tracking】—The smart fitness tracker ring monitors your heart rate, blood oxygen, blood Pressure, sleep quality, step count, and calories at any time. Stay informed about your health effortlessly.Comes with a portable charging case. 【Sleek and Comfortable】—Combining elegant design with durable materials, this sleep tracker ring is lightweight, fashionable, and comfortable. Compatible with Android/iOS, you can easily check your data anytime with our free forever APP. 【Perfect Gigt】—R8 Ring is the ideal present that will make your friends and family feel special and appreciated.Whether it's a Birthday, Valentine's Day, Mother's Day, Father's Day, Thanksgiving, Christmas, or New Year, this is the perfect choice. It's also an excellent gift for weddings, graduation ceremonies, and housewarming parties. 【Water Proof】— It is water-resistant and sweat-proof with an IP68 level of protection, ensuring its durability in various environments. No need to take it off when washing your hands or taking a shower. 【Smart Life】— R8 Ring seamlessly fits into our lives, all night and all day. Let health be at the core of your life and let the Smart Ring be your trusted companion! Parameters: Size: 18#, 20#, 22#, 24# BT: BLT5.2 Compatibility: Android 6.0 and above or iOS 11.0 and above Ring Battery Capacity: 23mAh Changer Box Battery: 400mAh Working Time: 7days Standby Time: 60days App: Smart Health Specifications: Brand: Robgid Model: R8 Material: Porcelain + Alloy Color: Black / Withe Water-Resistant Level: IP68 Item Weight: 6g / 0.21oz Package Size: 9.3 * 9.3 * 5cm / 3.66 * 3.66 * 1.96in Package Weight: 126g / 4.44oz Note: * Please read the user manual carefully before use. * There may be 1-3mm error due to manual measurement. * There may be slight difference in color due to shooting angle and light. Please refer to the real object. Package List: 1 * Smart Ring 1 * Charging Cable 1 * Charging Box 1 * Lanyard 1 * User Manual Package List: 1 * Smart Ring 1 * Charging Cable 1 * Charging Box 1 * Lanyard 1 * User Manual