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 employs 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. Comprehensive Monitoring: Track your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories expended. This smart ring also monitors fitness activities including walking and running, providing detailed insights to aid your fitness objectives. No Subscription Required: Connect the smart ring seamlessly with the health appno subscription fees are needed. Works with both iOS and Android, and the app synchronizes with Apple Health and Google Health Connect. Convenient Power: 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 out, preventing loss. Ideal for extended travel or business trips, keeping your ring consistently charged and prepared. All-Day Wear: Featuring 5ATM Waterproof rating and a titanium exterior designed for 24/7 wear, this smart ring withstands activities like swimming and hiking, serving as a dependable companion for tracking your health and fitness information. Precision Tracking at Your Fingertip: Powered by an advanced chip and sensor, this smart ring is carefully engineered to deliver accuracy and dependability in data tracking. HSA/FSA Eligible: This smart ring is approved for use with HSA/FSA, enabling you to conveniently utilize your Flexible Spending Account or Health Savings Account for purchase. Wearing Guide: For optimal sensing accuracy, ensure the orientation indicator (marked with a "+" symbol) faces your palm