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 8)

Achieve the Ideal Fit: This smart ring features a unique sizing system, distinct from conventional jewelry rings or other brands. For precise sizing, always use the official sizing kit to measure before you buy. Extensive Monitoring: Track your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories burned. It also monitors fitness exercises including walking and running, providing detailed data to help you reach your fitness objectives. No Ongoing Fees: Link the smart ring to the health app seamlesslyno subscription is needed. It works with both iOS and Android, and the app integrates with Apple Health and Google Health Connect. Handy Charging Solution: This 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's perfect for extended travel or business trips, keeping your ring charged and prepared for your journeys. Wear Around the Clock: Rated 5ATM Waterproof and crafted with a titanium shell for constant wear, this smart ring withstands pursuits like swimming and hiking, serving as a dependable partner for monitoring your health and fitness data in all conditions. Accurate Tracking on Your Finger: Driven by an advanced chip and sensor, this smart ring is carefully engineered to deliver accuracy and dependability in data monitoring, acting as your personal health advisor wherever you are. HSA/FSA Qualified: This smart ring is qualified for purchase with most Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA). Wearing Instructions: For optimal measurement accuracy, ensure the orientation indicator points toward your palm. Also, take off the smart ring before using slippery substances on your hands to avoid it slipping off