RENPHO 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 13)

Convenient Charging: The RENPHO LYNX Smart Ring boasts a 7-day battery life and includes a charging case for an extra charge and safe storage while out, eliminating the risk of loss. Ideal for long-term travel or business trips, ensuring your ring is always powered and ready for your adventures.All-Day Wear: 5ATM Waterproof and designed with titanium exterior for 24/7 wear, the RENPHO LYNX Smart Ring endures activities like swimming and hiking, making it a reliable companion for tracking your health and fitness data come rain or shine.Precision Tracking at Your Fingertip: Empowered by a sophisticated chip and sensor, the RENPHO LYNX Smart Ring is meticulously designed to offer precision and reliability in data tracking and serves as your personal health consultant anytime, anywhere.HSA/FSA Eligible: The RENPHO LYNX Smart Ring is eligible for purchase with most Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA).Wearing Guide: To ensure the most accurate measurements, please make sure the orientation indicator is facing towards your palm. In addition, please remove the RENPHO LYNX Smart Ring before applying slippery substances to your hands to prevent it from falling off.