Smart Ring Health Tracker for Men & Women - Sleep Monitor, Heart Rate & Blood Oxygen Sensor - IP68 Waterproof Fitness Tracker with 10-Day Battery - No Subscription Needed (Silver, Size 12) - Perfect for Sleep Analysis, Workout Tracking & Daily Health Monitoring

The size of ZMSTLAMP Ring is different from the standard ring size. Smart rings come in 6 sizes, from 7 to 12. Please measure your finger size as shown before purchase to ensure a perfect fit.

The smart ring not only uses research-grade sensors to accurately monitor more than 30 biological features, including sleep, activity, fatigue, heart rate, blood oxygen saturation, etc., but also introduces an innovative air smart remote control function, making your health data more direct than ever before; At the same time, it also allows you to easily capture the wonderful moments in life or switch small videos in the air, so that you could spend every beautiful day with ease.

The smart ring has excellent 5ATM water resistance, allowing you to easily cope with wet environments such as swimming, diving, and showering. It is compatible with both Android and IOS devices, and seamlessly integrates with a variety of common apps such as Apple Health and Google Health.

Designed for 24/7 all-weather wearing, and it has a powerful battery that can last up to 8-10 days on a 2-hour charge. The design of the smart ring is lighter and more comfortable than the traditional ring, with a better fit, no allergies, almost no sense of burden, so that you can freely forget about its existence, making health monitoring easy and day and night.

If you experience any problems after receiving your shipment, please contact us immediately via Amazon Message. We will do our best to help you solve the problem until you are satisfied. We are fully aware that as a small business, every step is full of challenges, but your support and trust is our greatest motivation. Thank you again.