Small and , anytime,anywhere A personalized doctor's service Easy and convenient, use as you wishEasy to improve the quality of sleep so that you really do sleep deeply When using this product with the inside of the left wrist to boot can work automatically, choose the right mode and gear, anxiety and depression people are recommended to wear 20 minutes each time Healthy Sleep Black Technology Increase sleep duration improve sleep quality The use of the heart may be accelerated, dizziness, muscle contraction and other , is the normal state of sleep instrument work, such asdiscomfort can shorten the working time and intensity, to maintain a relatively comfortable state in the human body Fast-paced life unstable sleep quality one third of your life needs to be spent sleeping the quality of sleep directly determines the quality of life Battery Capacity 110mAh Wristband Material:Silica Charging mode:Type-C Working Current:0.4-3.3mA Display mode: LED LCD display Battery life: more than 12h color: Black Material: silicone Package Contents: 1 x Sleeper 1 x Charging Cable 1 x Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.