Lynx Smart Ring-All Day Sleep & Activity Tracking, Includes Charging Case, 7-Day Battery Life, Subscription-Free App for iOS & Android, Size Before You Buy (Black, Size 7)

Achieve the Perfect Fit: This smart ring features a unique sizing system, distinct from conventional jewelry rings or other products. For precise results, always determine your size using the official sizing kit prior to purchase. Gain Comprehensive Insights: Monitor your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories burned. This smart ring can also track fitness activities like walking and running, providing detailed data to help you reach your fitness goals. No Subscription Fees: Connect the smart ring seamlessly to the health appno subscription is needed. It works with both iOS and Android, and the app syncs with Apple Health and Google Health Connect. Convenient Charging: The 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 perfect for extended travel or business trips, keeping your ring charged and prepared for your adventures. All-Day Wear: With a 5ATM waterproof rating and a titanium exterior crafted for 24/7 wear, this smart ring withstands activities such as swimming and hiking, serving as a dependable partner for monitoring your health and fitness data in all conditions. Precision Tracking at Your Fingertip: Powered by an advanced chip and sensor, this smart ring is carefully engineered to deliver accurate and reliable data tracking, acting as your personal health advisor wherever you go. HSA/FSA Eligible: This smart ring qualifies for purchase with most Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA). Wearing Guide: For optimal measurement accuracy, ensure the orientation indicator faces your palm. Also, remove the smart ring before applying slippery substances to your hands to avoid it slipping off