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 (Silver, Size 9)

Achieve the Perfect Fit: This smart ring uses unique sizing, which differs from standard jewelry rings or other products. For accurate sizing, always measure with the official sizing kit before ordering. Comprehensive Health Insights: Monitor your sleep, blood oxygen, stress, heart rate, steps, distance, and calories burned. It can also track fitness activities like walking and running, providing detailed data to help you reach your fitness goals. 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 syncs with Apple Health and Google Health Connect. Convenient Charging Solution: It offers up to 7 days of use per charge and comes with a charging case for an additional charge and secure storage on the go, reducing the chance of loss. Perfect for extended travel or business trips, keeping your ring charged and prepared. Wear It All Day: With 5ATM water resistance and a titanium exterior designed for 24/7 wear, it withstands activities such as swimming and hiking, serving as a dependable partner for tracking your health and fitness information. Precise Tracking at Your Fingertip: Powered by an advanced chip and sensor, it is carefully engineered to deliver accurate and reliable data tracking, acting as your personal health advisor. HSA/FSA Eligible: This smart ring is eligible for purchase with most Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA). Wearing Instructions: For the most precise readings, ensure the orientation indicator faces your palm. Also, take off the ring before applying slippery substances to your hands to avoid it slipping off