qazaa Built-in battery capacity:150mAh Rated voltage:3.7V Rated power:0.1W Input voltage:5V 1A Rated current:25MA Charging time:0.5h Use time:6h Net weight:53g Colour:White Material:ABS Size:8.5x4.5x3CM Package Contents: 1 Sleep meter 1 TYPE-C data cable 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.5. Type-C charging design, 0.5 hour charging time, battery life up to 6 hours, to meet your . 4. It is very suitable for people who are stressed in life, prone to anxiety and depression, difficult to fall asleep, easy to wake up in the middle of the night, and need to overcome jet lag. 3. 9 sleep modes, 9 levels of strength adjustment, effectively relieve the pressure of life, so that you can fall asleep smoothly without . 1. Micro-current pulse stimulation combined with soothing music can physically improve sleep, help you fall asleep easily and quickly, and bid farewell to insomnia and anxiety. 2. Pure physical sleep aid technology, no chemical substances, no side effects, regular use will not cause adverse effects on the body.