This is the cordless hands-free headband that rejuvenates hair by stimulating follicles with 82 medical-grade lasers. Effective for men and women, it uses the same low-level laser therapy (LLLT) that has long been demonstrated in clinical trials to be an effective treatment for hair loss. Its 82 lasers produce a 655nm wavelength that helps encourage restoration of damaged follicles. Results may be seen in as little as 16 weeks with 90-second treatments three times a week. AC plug. 8 1/2" L x 6" W x 3 1/2" D. (1 lb.)