Sleep Aid Machine Handheld Massaging Portable Microcurrent Intelligent Sleep Instrument for Insomnia Item Type: Sleep aid machine Material: ABS Battery Type: Lithium ion battery(built in) Battery Capacity: 200mAh Product Size: Approx. 60 x 40 x 37mm / 2.4 x 1.6 x 1.5in The Efficacy Of The 3 Modes: Soothing Mode: Eliminate palm fatigue and pain, and sweep away fatigue. Active Mode: Improve the enthusiasm of study and work, and cheer up when you are sleepy. Relaxation Mode: Improve sleep speed and sleep quality. Speed Gear: 1-9. How e1. Charge the product fully. 2. You can properly wet the palm with water, so that both positive and negative induction rings contact the palm, long press the on key to start, then the default is to relax mode, the blue indicator light is long bright, the user can select the appropriate strength gear through the +, - key (a total of 9, the boot default 1), short press the power, mode key, Mode to relax mode, active mode, soothing mode, relax + soothing mode, active + soothing mode, relax + active + soothing mode switch in turn, and the blue indicator light changes with the mode change. Note: When the mode changes, the force automatically returns to 1 gear. 3. This product has the function of timing. The default working time is 15 minutes. 4. After use, put the product in a dry and cool place. (When the blue LED is dimmed or you can't feel the obvious stimulation by pressing the + button, it means the battery is low. Please charge it in time.)