High quality brand new Accessory & Sales ServicePacking, Smart Ring*1, Charging Cable*1, Instruction Manual*1. We offer one year quality warranty, please contact with us if you encounter any problems during use.Long Battery LifeThe 18mAh battery combined with an efficient battery management system can make this smart ring health tracker work for up to seven days, but it only takes two hours to fully chargeChoose Size Before BuyChoose the perfect fit from a range of sizes between ring US sizes 7 through 12, ensuring all-day comfort.The sleep smart ring is only the size of a coin and lightweight enough to be worn day and night, You can barely feel itComprehensive Health MonitoringFitness tracker ring not only monitors heart rate, blood oxygen saturation, but also records steps, distance, calorie consumption, and has a range of exercise modes.5ATM waterproof & Remote Photo ControlIn rainy days or swimming , Don't worry, Waterproof smart ring has 5ATM waterproof rating,After enabling the remote photo function on the app, just shake the finger wearing the ring to take photos remotely.Attention: The package you received does not include smart ring charging case, only the charging cable is included. If you need the charging case, you can search for it, ASIN : B0DHZMJ24N. It is suitable for all sizes of smart bracelets in our shop.