Sizing kit comes with a sizing kit us 8-11 to help you find the perfect fit before purchase avoiding returns and exchanges. Slim design 0.6Mm thinner than standard smart rings weighing only 2.5 Grams for ultimate comfort. 24 7 Body data feedback real-time tracking of body data and sleep quality to help you understand yourself better. Gesture-controlled remote double-tap the ring to control your phone switch videos take photos play music or browse e-books without touching the screen. Fast charging and 5atm water resistance up to 5-7 days of use on a 30-minute charge. With a 5atm water resistance rating it’s safe for showering and swimming.