Head Acupoint Massager Electric Soul Extractor Rechargeable Battery Octopus Scalp Vibration Massage Claw Alleviate Fatigue Promote Blood Circulation Tools Feature: 1. The 12 scratching strips are smooth and round, do not pinch the hair and hair, use it with confidence 2. One-key adjustment, multi-gear mode, free force, easy mode change 3. Intelligent pseudo-frequency vibration, free hands, relax nerve scalp Specification: Material: ABS Size: 20*20*20cm/7.87*7.87*7.87in Working voltage: 5V Power: 1.2W Battery capacity: 500mAh Charging time: 3 hours Mode selection: Light shock mode: used for daily relaxation of nerves and awakening vitality Severe shock mode: penetrate deep into the scalp, deeply relieve stress and relieve fatigue Mixed mode: alternating intensity, simulating irregular manual massage