Ring OnePlus - Ultra-Thin Titanium Smart Ring - 7 Days Battery Life - Fitness/SPO/Stress/HR/Sleep Skin Temperature Tracker - No App Fee - iOS&Android Compatible (Black,Size 11)

The smart ring features new sleep skin temperature monitoring technology, greatly enhancing data accuracy. This marks a significant technological advancement in the shift from "health recording" to "health prevention." The sizing for this ring is different from standard ring sizes. It is recommended to acquire a sizing kit to determine the most precise and comfortable fit for your finger. As a pioneer in wearable technology, this smart ring successfully combines a compact design with multiple functions. It monitors stress, heart rate, blood oxygen, HRV, and activity data, serving as a comprehensive daily health companiontruly putting "Health at Your Fingertips." This ring redefines the core of smart wearable devices. We avoid misleading promotional strategies and are dedicated to providing a more liberated and satisfying user experience. As a skin-friendly wearable, the ring adheres to top industry standards, from the coating on its titanium exterior to the waterproofing of its inner ring. A single charge provides up to one week of use. The ring utilizes a unique laminated battery that lowers total weight while maintaining performance. Combined with its dedicated wireless charging case, it easily supports an active lifestyle. The smart ring is officially approved for purchase using HSA and FSA funds. You can conveniently use your health savings or flexible spending account to access advanced sleep tracking, wellness insights, and recovery support. The package contains: smart ring*1, Wireless Charging Case*1, 1m/3.3ft USB-C Cable*1, Instruction Manual*1, Quick Guide*1. Its functionality includes stress, heart rate, blood oxygen, HRV, sleep tracking, wellness insights, and recovery monitoring