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 10)

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. It also monitors fitness activities including walking and running, delivering comprehensive insights to help you reach your fitness objectives. No Subscription Required: Connect the smart ring to the health app seamlesslyno subscription fees are needed. The app works with both iOS and Android and syncs with Apple Health and Google Health Connect. Convenient Power Solution: This smart ring 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. It is excellent for extended travel or business trips, keeping your ring charged and prepared. Wear It All Day: With a 5ATM waterproof rating and a titanium exterior, it is built for continuous wear. The ring withstands activities such as swimming and hiking, serving as a dependable partner for monitoring your health and fitness data under various conditions. Accurate Tracking at Your Fingertip: Equipped with an advanced chip and sensor, it is carefully engineered to provide accurate and reliable data tracking, acting as your personal health advisor wherever you are. HSA/FSA Eligible: This smart ring is eligible for use with HSA/FSA, enabling you to conveniently utilize your Flexible Spending Account or Health Savings Account for your purchase. Wearing Instructions: For optimal sensing accuracy, ensure the orientation indicator (marked with a "+" symbol) faces toward your palm