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 conventional jewelry rings or other brands. For precise results, always measure your size using the official sizing kit prior to purchase. Comprehensive Health Insights: Monitor your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories burned. It also tracks fitness activities including walking and running, providing detailed data to help you reach your fitness objectives. No Subscription Required: Connect the smart ring seamlessly with the health applicationno subscription fees are 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. Perfect 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. It withstands activities like swimming and hiking, serving as a dependable partner for monitoring your health and fitness information. Precise Tracking at Your Fingertip: Equipped with an advanced chip and sensor, it is carefully engineered to deliver accuracy and dependability in data tracking. HSA/FSA Eligible: 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. Additionally, remove the smart ring before applying slippery substances to your hands to avoid it slipping off