Feature: 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 Specification: Item Type: Schumann Wave Generator Material: ABS Input Voltage: DC5V 0.5A Output Power: 2.5W Output Frequency: 7.83Hz Function: Help to improve sleep quality, improve water activity, magnetize water, resist external electromagnetic radiation. Package List: 1 x Schumann Wave Generator1 x Power Cable