Superior Massage Experience: TCRAYCH Electric Head Massager with 4 silicone massage heads, soft 96 rotating kneading nodes can scratch, pinch, knead and knock the scalp by imitating the technique of a massagist, which is helpful to relieve body and mind, promote hair growth and improve sleep quality. 3 Speeds Adjustable: Smart Scalp Massager with low / high / alternative speed modes are adjustable by one-button control to meet different intensity needs, aiming to experience comprehensive kneading massage.(Automatically shut down after 20 minutes.) Waterproof & Anti-skid: Head Scalp Massager is made of IPX7 waterproof material and anti-skid thread design help you hold it better in shower to enjoy the massage perfectly. Also the massage head is detachable and washable.