Specifications: Applicable objects: hair loss, thin hair Function: hair growth, hair care Material: diving material Color: black Product size: 21.5*18cm Temperature range: 43-45 Number of lamp beads: 240 (120x660nm red light + 120x850nm infrared) Frequency of treatment: Use for 20 minutes every other day. Power supply condition: DC 5V-2A Product weight: hair growth cap 0.15kg; power adapter 0.1kg Features: The LED therapy hat is a hair loss treatment and hair growth device, which mainly stimulates weakened hair follicles in a painless way, strengthens the growth vitality of hair follicles, and then promotes healthy hair growth. The device has infrared 850nm and red 660nm The LED therapy hat is specially designed for the treatment of thinning hair and baldness, helps reverse and prevent hair loss and stimulates hair regeneration. 3-speed setting, can operate separately with 10Hz and 40Hz pulses. Convenient for individual control. Package includes: 1x LED therapy hat 1x USB power cable (2 meters) 1x user manual