1,7.83Hz Ultra Low Frequency: The ultra low frequency pulse generator adopts excellent control chip, specific 7.83Hz ultra low frequency wave, the frequency is stable 2,Main Functions: Beneficial to improve the taste of water, relieve fatigue and pressure, improve sleep, restore physical and mental health, and reduce surrounding electromagnetic radiation 3,With Power Cable: The ultra low frequency pulse generator comes with a USB power cable, which can be directly plugged into a 5V, 0.5A power supply to use 4,Excellent ABS Made: The housing of this pulse generator is made of excellent ABS material, which has high strength, not easy to break, has good durability for long term usage 5,Applicable for: This is suitable to use glass, porcelain, iron, etc. to hold water, aluminum, copper and other products cannot be used, which cannot let the low frequency of 7.83HZ pass through the container 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. Sold by-YJL official store