Help sleep sound quality low -frequency pulse generator stimulate deep-sleep

Feature *Adopt imported chips the frequency has more stable pulse double layer FR-412T-PCB board PCB board quality is stable and more reliable. *Increase the launch coil enhance the 28 -circle transmission coil increase the scope of launch. *Support the Type-C and USB Micro interface dual-power interface design to reduce your troubles for your interface selection. *Increase electrostatic protection and short -circuit protection use safety and reliable use. *Increase the power switch turn on the power supply to the ON position and turn off the power of the OFF position. Specification Frequency: 7.83 Hertz Interface: Type-C USB Micro Board: PCB Scope of use: bedroom office Package included 1*Schumanto generator Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.