Features 1. The sleep aid instrument is made of material, stable and firm, durable for use. one key to turn on, adjust power. Easy to fall asleep every day. 2. Quick Sleep Aid: This sleep aid device can helps people with lack of sleep and poor psychological quality to help you fall asleep as soon as possible and get a healthier and better sleep. 3. Gently hold the sleep aid machine, the micro current is transmitted to the brain through the Laogong acupoints in the palm of the hand to produce a calming and relaxing effect, helping to sleep healthily. 4. Light weight, small size, latest aid sleeping device is easy to carry around. USB charging design, multiple power supply modes, easy and convenient charging, long endurance. 5. It can be used in the office, at home, moderately relieve headaches. Let you get rid of insomnia, anxiety, sleep depression, insomnia, and help patients get good sleep. Specification Material: ABS, Stainless steel Color: White, Blue, Yellow Size: 7.5 x 5 x 3.5 cm Weight: 56 g Battery: 400 mAH Input voltage: DC5V or 1A Working power: 0.5W Charging port: Micro USB Package Include: 1 Sleep Aid Device Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.