Prospera’s massage hairbrush is fashionably designed to improve scalp health and hair appearance. Powered by alkaline 2AA batteries, it is safe to use routinely. This brush has 108 replaceable teeth and is washable.The infrared light wave treats hair and helps reduce dandruff. The vibration massage improves scalp blood circulation, making the hair more beautiful.Two operation modes: vibration or infrared massage for you to choose. Number of Batteries: 2 Number of Settings: 2 Number of Speeds: 1 Features: Vibration, Battery Operated Battery Type: Alkaline Measurements: 2 Width/Inches, 1.5 Height/Inches, 9 Length/Inches Base Material: 100% Other 5% Or Less Battery Size: Aa Care: Wipe Clean Country of Origin: Imported