BEST CHOICE FOR PARENTS AND FRIENDS: This hair growth comb is the perfect gift for others on birthdays, anniversaries, Christmas and other occasions. Our Hair growth device includes: 1 piece Hair growth device, 1 piece protective eyewear, 1 piece USB cable, 1 piece power adapter plug. And a 12-month warranty for the therapeutic device. If any problem occurs, please contact us via email. EASY TO OPERATE: The handheld Hair growth device has an LCD display, easy to operate, press and hold the on off button to turn on, modern design, LCD display, especially suitable for the elderly. red hair comb is easy to carry, whether you are at home or outdoors, it is small in size, fast charging via USB, and hand-held use, bringing you a different experience. PORTABLE AND CONVENIENT, USB CHARGED, small size and handheld, specially designed for home use. The set time is fixed at 10 minutes. It is recommended to use this red infrared light Hair growth device comb 2 times a day, once in the morning, and once in the evening. Please use the red light for 15 to 20 minutes each time. MULTIFUNCTIONAL ADJUSTABLE MODE: This hair regrowth comb has 4 levels. The soft red light help stimulate the scalp, repair damaged hair, and promote the growth of new hair. Our products are harmless, painless, and have no side effects, and are suitable for all hair types. HAIR GROWTH DEVICE HEAD MASSAGER: Our red infrared light hair growth laser comb stimulates the activation of hair follicles through infrared light, promotes new hair growth, repairs damaged hair, and realizes hair regrowth in just a few cycles. And also make you more relaxed while enjoying the scalp massage.