Physical Relaxation: This ultra low frequency pulse generator is good for people's physical and mental relaxation, improve the body's perception of sound and images. Easy to Use: This ultra low frequency pulse generator with Type C interface is easy to use. and it features high accuracy and stability. Pressure Relief: This 7.83HZ pulse generator contributes to improve work efficiency and reduce mental stress. High Stability: This wave generator is made from highly stable pulse chip, accuracy correction capacitance, and accuracy multiloop adjustable resistor. : wave generator is for friends and family that suffer from insomnia and mental stress., Manufacturer: huanzhi