Lynx Smart Ring-All Day Sleep & Activity Tracking, Includes Charging Case, Gifts for Men, 7-Day Battery Life, Subscription-Free App for iOS & Android, Size Before You Buy (Black, Size 6)

Achieve the Perfect Fit: This smart ring features a unique sizing system, distinct from standard jewelry rings or other brands. For precise sizing, always measure using the official sizing kit prior to purchase. Detailed Health Insights: Track your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories burned. It also monitors fitness activities like walking and running, providing comprehensive data to help you reach your fitness objectives. No Subscription Required: Connect the smart ring to the health app seamlesslyno subscription fees needed. It works with both iOS and Android, and the app integrates with Apple Health and Google Health Connect. Convenient Power 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, keeping your ring charged and prepared. Wear It Around the Clock: With 5ATM water resistance and a titanium exterior built for 24/7 wear, it withstands activities including 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 accurate and dependable data tracking. HSA/FSA Approved: It qualifies for purchase with most Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA). Wearing Instructions: For optimal measurement accuracy, ensure the orientation indicator faces your palm. Also, take off the ring before applying slippery substances to your hands to avoid it slipping off