630nm Red Light Massage Comb Scalp Care Liquid Guide Hair Growth Instrument 1. 3 major kneading modes: Lunch break comfort mode (10 minutes) slow massage combing, Baihui acupoint grabbing and lifting; Timeout wake-up mode (10 minutes) 10 minutes of fast kneading and pulling to promote scalp microcirculation; Sleeping aid mode before bed (10 minutes) fast and slow alternation, kneading scalp, soothing nerves, and helping sleep; 2. Scalp care: microcurrent tightens the scalp, targets various scalp problems, and promotes absorption; 3. 72 round comb teeth strengthen kneading scalp massage, rich and dense hair, 630nm wavelength red light hair care; 4. 6ML large-capacity liquid guide tank, 8 roller balls squeeze out hair care liquid, while introducing hair growth care liquid, massage the scalp 5. About 217g, lightweight and compact, put into a bag, take it whenever you need it 6. Built-in 1400 mAh lithium battery, Type-C charging interface Parameters: 1. Product material: ABS+PC+silicone 2. Input voltage: 5V 1A 3. Working voltage: 3.7V 0.2A 4. Power: 5W 5. Lithium battery: 3.7V 5.18Wh 1400mAh 6. Charging time: about 3 hours to fully charge 7. Battery life: about 2 hours and 50 minutes 8. Machine size: 21 x 8.5 x 3cm 9. Weight: about 217g