Feature:1. [Intelligent Step Tracking] The fitness smart ring features precise step tracking and monitors exercise data accurately, to help you achieve your health goals.2. [Deep Waterproof] IP67 waterproof grade, you can comfortably wear this fitness tracker ring in different environments without worrying about splashes of water damaging it.3. [Sleep Monitoring] The health tracker ring comes with an advanced sleep monitoring function, analyzing your sleep quality and providing insights to enhance your sleeping outcomes.4. [Stylish and Practical] With its black design, this sleep monitor ring is stylish yet refined, complementing all styles of outfits, perfect blend of fashion and function.5. [Comprehensive Health Management] This smart health ring helps you monitor your physical activities daily, providing all around health management.Specification:Item Type: Fitness Smart RingMaterial: Titanium AlloyRing Battery Type: Lithium Battery (Shipped with Built in Battery)Ring Battery Capacity: 20mAhRing Power Supply: USB InterfaceRing Waterproof Level: IP67Color: Black.Package List:1 x Fitness Smart Ring1 x Charging Cable1 x User Manual