【Electric Head Massager】Headache Relief and Scalp Relaxation. It has 4 massage heads with 28 individual nodes that rotate in both combined clockwise and counter-clockwise rotation. 【Waterproof Design】The head massager is made of waterproof material, allowing you to massage your scalp in the shower to relieve itching. Tips: Do not immerse the massager in water for a long time. 【3 Speed Modes】The head massager has 3 modes (low / high / alternative) to choose from for different intensity needs, from gentle to deep kneading massage. 【No Charging Base Required】The electric head massager is superior to other products in terms of charging, no bulky base is needed - just plug in the USB cable to charge. 【Portable & Gift】Our stress-relieving head massager is compact and lightweight, weighing only 0.48lb. Take it with you wherever you go and enjoy a relaxing massage anytime, anywhere.