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 9)

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 with the official sizing kit prior to purchase. Detailed Health Monitoring: Track your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories burned. This smart ring also monitors fitness activities like walking and running, providing comprehensive insights to aid your fitness objectives. No Subscription Required: Connect the smart ring seamlessly with the health appno subscription fees are needed. It works with both iOS and Android, and the app syncs with Apple Health and Google Health Connect. Convenient Power Solution: This smart ring offers up to 7 days of use per charge and comes with a charging case for an additional charge and secure storage while on the go, reducing the chance of loss. It's perfect for extended travel or business trips, keeping your ring charged and prepared. Wear It Continuously: With 5ATM water resistance and a titanium exterior built for all-day wear, this smart ring withstands activities such as swimming and hiking, serving as a dependable partner for monitoring your health and fitness data in any environment. Accurate Tracking at Your Fingertip: Equipped with an advanced chip and sensor, this smart ring is carefully engineered to deliver accurate and reliable data tracking, acting as your personal health advisor wherever you are. HSA/FSA Eligibility: This smart ring qualifies 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, remove the smart ring before applying slippery substances to your hands to avoid it slipping off