Plyisty7epmwsdrh9-15

Specification: Item type: smart ring. Material: stainless steel. Ring battery type: Li-battery, capacity: 20 mAh (built-in) APP: For Smart Health. Application: With the fine thread used for sewing, measure the place where the ring is worn (e.g. at the root of the finger). Measure the length of the thread with a ruler (the thread should be straight and the tips on both sides should be aligned). Measure a little tighter, otherwise it will be too big. Package list: 1 x smart ring. 1 x user manual. 1 x charging cable. Note: Proper wearing: wear the optical sensor in close with the skin of your finger to ensure the accuracy of the data.