Lynx Smart Ring-All Day Sleep & Activity Tracking, Includes Charging Case, 7-Day Battery Life, Subscription-Free App for iOS & Android, Size Before You Buy (Black, Size 8)

Achieve the Ideal Fit: This smart ring employs a unique sizing system, distinct from standard jewelry rings or other brands. For precise sizing, always measure with the official sizing kit before ordering. Extensive Monitoring: Track your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories burned. It also monitors fitness activities including walking and running, providing detailed insights to aid your fitness objectives. No Subscription Required: Connect the smart ring to the health app seamlesslyno subscription fees are needed. It works with both iOS and Android, and the app integrates with Apple Health and Google Health Connect. Handy Charging: It features a 7-day battery life and comes with a charging case for an additional charge and secure storage when on the go, reducing the chance of misplacement. Perfect for extended travel or business trips, keeping your ring charged and prepared. Wear All Day: Rated 5ATM Waterproof and crafted with a titanium exterior for continuous wear, it withstands activities such as swimming and hiking, serving as a dependable partner for monitoring your health and fitness information. Accurate Tracking at Your Fingertip: Equipped with an advanced chip and sensor, it is carefully engineered to deliver accuracy and dependability in data monitoring. HSA/FSA Qualified: It is qualified for purchase with most Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA). Wearing Instructions: For the most accurate readings, ensure the orientation indicator faces your palm. Also, take off the smart ring before applying slippery substances to your hands to avoid dropping it