About This Product Smart Scalp Massager: This cordless head massager features four silicone massage heads and 96 soft kneading nodes to soothe and relax the scalp, promote hair growth, deep cleanse, relieve stress, and stimulate blood circulation (automatically shuts off after 20 minutes). Three Adjustable Speeds: Choose between low, high, and alternating speed modes for a stimulating, three-dimensional kneading massage experience that provides a soothing and relaxing experience. Waterproof and Tangle-Resistant: Made with IPX7 waterproof material, you can enjoy a head massage even in the shower. The unique anti-slip thread design increases friction and provides a secure grip, preventing slippage. Rechargeable and Portable: This rechargeable handheld hair massager is easy to carry, allowing you to enjoy a head massage anytime, anywhere. The USB charging port allows for easy charging using a power bank, computer, or cable. This compact and portable scalp massager is cordless, making it a great way to relieve stress in the office, at home, or in the car.