Product Price Number of Massagers Frequency (rpm) Battery Life (hrs) Waterproof Rechargeable Massage Patterns
Comfier COMFIER Electric Cordless Scalp Massager
US
£37.98 4 2 Clockwise & Counterclockwise

This cordless, rechargeable scalp massager has 4 rotating massage heads with 84 total silicone nodes, designed for deep shiatsu-style kneading. It offers 2 massage speeds and 2 massage modes (clockwise and counterclockwise) and is IPX-7 waterproof for use in the shower. Best for people who want a handheld scalp massager for stress relief and regular scalp stimulation.

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It has a 2-hour runtime per full charge, which is the stated battery life for this cordless Comfier model.

EKZ EKZ Sonic Vibrating Scalp Massager
US
£129.15 5 3 vibration settings

The EKZ Sonic Vibrating Scalp Massager is a silicone scalp brush designed for use in the shower and for scalp cleansing and relaxation. It uses sonic vibrations with three vibration settings and is rated as waterproof, with a hold charge time of up to 5 hours. It's suited to people who want an electric, rechargeable-style scalp massaging brush with adjustable vibration levels.

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For longest battery life, the EKZ Sonic Vibrating Scalp Massager is listed as holding a charge for up to 5 hours, which is longer than many other scalp massagers with reported shorter runtimes.