Features: 1. Using four : EMS microcurrent and RF radio frequency and LED color light and EP technology. gently care for your hair health. 2. This electric hair care comb massages the scalp through the comb teeth. injects health factors into the hair. promotes hair growth. and makes the hair thicker and thicker. 3. Four levels of adjustment. tailor-made hair care programs. effectively strengthen hair . improve hair quality. reduce hair loss and hair breakage. 4. Equipped with a dropper. our comb can be used with hair growth lotion to promote hair absorption of nutrients for better results. 5. This electric comb is easy to carry. so you can enjoy beauty salon-level hair care SPA anytime and anywhere. : Charging voltage: 5V Rated current: 0.38A Rated power: 1.6W Material: plastic colour: green Package Contents: 1 x RF hair care comb 1 x dropper 1 x USB Charging Cable 1 x English User Manual Only the above package content. other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.