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 (Silver, Size 10)

Get the Perfect Fit: The RENPHO LYNX Smart Ring uses unique sizing —different from standard jewelry rings or other brands.To ensure accuracy, always purchasing and measure your size with the official RENPHO Sizing Kit before buying LYNX Smart Ring.

Comprehensive Insights: Monitor your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories burned. The RENPHO LYNX Smart Ring can also track fitness activities such as walking and running, gaining detailed insights to support your fitness goals.

No Subscription Fees: Seamlessly connect the RENPHO LYNX Smart Ring with the Renpho Health App—no subscription fees required. Compatible with both iOS and Android, the App syncs with Apple Health and Google Health Connect.

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 approved for use with HSA/FSA, allowing you to conveniently use your Flexible Spending Account or Health Savings Account to make a purchase.

Wearing Guide: To ensure the most accurate sensing possible, please make sure that the orientation indicator (marked with a "+" symbol) is facing towards your palm.