Description: This handhold sleep aid device adapt mouse-shaped ,feel free to hold it in the palm of your hand Low-frequency pulse,physical action, transmitted to the palm of the hand,use hand warming massage at the same time, the sleep aid effect is more obvious Micro current,Stimulating neurotransmitters in the cerebral cortex through microcurrents,regulate mood and promote sleep Rechargeable and reusable,with 1500mah large battery capacity,also has heating function,can be used as a hand warmer Three-speed adjustment, constant temperature control; fast charging, safe and explosion-proof Specification: Power supply mode: rechargeable Material: Plastic Control method: mechanical Working principle: heating and warming hands to drive away the cold with micro-current pulses Body material: main ABS Input voltage: DC5V/1A Input interface: TYPE-C Massage mode: fast, medium and slow 3 gears optional Massage intensity: 10 levels of intensity Hand warming temperature: 45 degrees 50 degrees 55 degrees 3 levels optional Battery capacity: polymer 1500 mAh Control method: button control Size Chart: 30x48x88mm/1.18x1.89x3.46inch Package Includes: 1 Piece Host 1 Piece Charging Cable 1 Piece Manual Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!