BIEMHA

Smart Ring with Sleep Monitoring, 10-Day Battery Life, Stress/Heart Rate/Women's Health Tracker,No APP Subscription, Android & iOS Compatible (Silver, 8) 【Check the Size Before Purchase】 Before buying the BIEMHA Smart Ring, we strongly suggest that you refer to the size chart and carefully measure the circumference of your finger. This will ensure you get the most comfortable wearing experience and easily avoid any unnecessary returns or exchanges. 【7-10 Day Battery Life】 With a 7-10 day battery life, the BIEMHA smart ring ensures continuous health monitoring without frequent charging. When used with the smart charging case, the usage time can even...