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 10)

Achieve the Perfect Fit: This smart ring features a unique sizing system, distinct from standard jewelry rings or other brands. For accurate sizing, always measure with the official sizing kit prior to purchase. Detailed Health Monitoring: It tracks your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories burned. It also monitors fitness activities like walking and running, delivering comprehensive insights to help you reach your fitness objectives. Subscription-Free Use: Connect the smart ring to the health app seamlesslyno subscription fees are needed. The app works with both iOS and Android and syncs data with Apple Health and Google Health Connect. Handy Charging Solution: It offers a 7-day battery life and comes with a charging case for an additional charge and secure storage on the go, reducing the chance of misplacement. Perfect for extended travel or business trips, it keeps your ring charged and prepared. Wear It All Day: With a 5ATM waterproof rating and a durable titanium exterior made for 24/7 wear, it withstands activities including swimming and hiking, serving as a dependable partner for monitoring your health and fitness data in all situations. Accurate Tracking at Your Fingertip: Powered by an advanced chip and sensor, it is carefully engineered to provide precise and reliable data tracking, acting as your personal health advisor wherever you go. HSA/FSA Eligibility: It qualifies for purchase with most Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA). Wearing Instructions: For the most precise measurements, ensure the orientation indicator faces your palm. Also, take off the ring before applying slippery substances to your hands to avoid dropping it