Smart Ring Fitness Tracker with Heart Rate and Sleep Monitoring

<p>A slim smart ring that tracks heart rate, blood oxygen, sleep and daily activity, then syncs to a companion smartphone app for reports and trends. The sleep view breaks the night into deep, light and REM stages.</p><ul><li>Weighs about 4.7 g and is 2.4 mm thin for all-day and overnight wear</li><li>Magnetic charging with a built-in rechargeable battery</li><li>Water-resistant for everyday use such as handwashing</li><li>Finishes: Black, Silver, Gold</li><li>US sizes 6 to 13 (circumference): 6 = 52 mm, 7 = 55 mm, 8 = 57 mm, 9 = 59.8 mm, 10 = 62.4 mm, 11 = 65 mm, 12 = 67.5 mm, 13 = 70 mm</li></ul><p>Health data is for general wellness only, not medical use. Each unit is one smart ring.</p>

Gildan 5000 heavy cotton · garment measurements (inches). Width is armpit to armpit laid flat, length is shoulder to hem — lay a shirt you already like on a table and compare. Fit runs relaxed: size down one for a closer cut. Full size guide

Free U.S. shipping on orders over $75.00. Standard shipping is $6.99 below that, dispatched in 1-2 business days with 3-6 days in transit.

Full shipping policy →

Returns and exchanges are accepted within 30 days of delivery, with no restocking fee.

Full return policy →