Feature:1. ACCURATE SLEEP MONITORING: Through intelligent algorithms and advanced sensing technology, it monitors sleep quality in real time and provides detailed data on deep sleep, light sleep and number of wakings.2. MULTIFUNCTIONAL EXERCISE TRACKING: Records steps, calories burned, distance traveled, and other exercise data to help you better manage your health and achieve your exercise goals.3. STYLISH DESIGN: Exquisite appearance and ergonomic design, so that the ring can be used for sports, but also with a variety of fashionable dress up, fashionable and practical at the same time.4. MATERIAL: This smart ring is made of abrasion resistant and scratch resistant material, which is durable. And it is light and comfortable to wear without burden.5. BEST GIFT CHOICE: This ring is a meaningful present for any occasion or holiday, such as birthday, anniversary, Thanksgiving, Christmas, or Valentine's Day.Specification:Item Type: Smart RingMaterial: Titanium AlloyWeight: Approx. 104g / 3.7ozCharging Compartment Battery Type: Lithium Battery (Built In)Charging Compartment Battery Capacity: 300mahCharging Compartment Power Supply: USB PortRing Battery Type: Lithium Battery (Built In)Ring Battery Capacity: 20mahRing Power Supply: Battery Compartment ChargingRing Waterproof Grade: IP68.Package List:1 x Smart Ring1 x Charging Compartment (Random Color)1 x Charging Cable1 x Instruction Manual