The LED therapy Hat is a hair loss treatment and hair growth equipment, which mainly stimulates weakened hair follicles in a painless way, strengthens the growth of hair follicles, and then promotes hair growth. The device includes infrared 850nm and red 660nm<br> The LED Therapy Hat is specially designed to treat thinning hair and balding, help reverse and prevent hair loss and stimulate hair regeneration.<br> Features:<br> 3-gears adjustment, can operate under 10HZ and 40HZ pulses separately.Convenient for individual control.<br> Package incldued:<br> 1x LED Therapy Hat<br> 1x USB Power Cord (2 meters)<br> 1x User Manual<br> Instructions for Use:<br> 1.Put on the LED light therapy Hat<br> 2.Plug power supply into electrical .<br> 3.Press and hold on / off switch to start device.<br> 4.You can only see the Red LEDs: the others are in the Infrared light spectrum and can't be seen with the human eye.<br> 5.Treatment time is 20 minutes, it will automatically shut off after 20 minutes. The device may be used multiple times pern day.<br> 6.Press and hold on/off switch at any time to stop the device.