Features: 1. Micro-current + high-frequency vibration massage deeply soothes the scalp, promotes blood circulation, allows the nutrient solution to reach the hair roots, and better promotes the absorption of nutrients by the scalp. 2. 625nm red light enhances metabolism, activates cells, promotes regeneration of hair follicles, and protects scalp health. 3. Three hair care modes (hair growth mode, massage mode, rejuvenation mode) effectively massage and relax the scalp, maintain hair and promote healthy hair growth. 4. Helps you improve various hair health problems such as frequent hair loss, dry and frizzy hair, split ends and greasy hair. 5. 6ml medicine solution box, 1ml dosage is accurately controlled, and there is no residue in the liquid. It is suitable for all kinds of hair nourishing medicine solutions, liquid scalp essence oils, nutrient solutions, etc. 6. Type-C fast charging, fully charged in about 1 hour, 10 minutes of daily use, continuous use for 1 week, no need for frequent charging. Specifications: Color: White material: plastic Water tank capacity: 6ml Red wavelength: 625nm Working voltage: 3.7V Charging voltage: DC5V Built-in battery capacity: 150mAh Charging time: about 1H Maximum power: 0.32W Net weight: 82g Product size: 6.8*5*2.6CM Packing size: 9.8*9.8*3.7CM Packing List: Massage comb*1 Type-C charging cable*1 Manual*1