Features: Multi-wavelength stimulations with Red Light (630nm) + Blue Light (460nm) for optimals scalp health. Multifunctonal: Red light boosts blood-flow to the scalp, nourishing follicles for enhanced function and growth. Blue light regulates scalp oil production, fostering a health environment for hair growth. Massage function improves scalp circulation, aiding in overall hair health. Dual light + massage, offering multifunctional treatments. Travel-ready design, allowing you to maintain your hair regrowth on the move. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Weight: 174g/365g Size: 20.2*8.7*4.55cm/21*12*6cm Charging voltage: 5V Rated voltage: 3.7V Rated power: 5W Battery capacity: 800 mAh Material: ABS+PC+TPU Function: Colorful light, ions, vibration, essential-oil roller ball, EMS-micro current Package List: 1x Red/Blue Light Phototherapy Massage Comb