This is a popular ultrasonic hair iron! It helps to enhance the penetration of hair treatments in the bath. Although there are no instructions, simply apply the treatment and then use the iron to help it penetrate (⋆ᴗ͈ˬᴗ͈)” [Body Size] Approximately 4.1 x 25.8 x 4.1 cm [Body Weight] Approximately 280 grams [Waterproof Rating] IPX6 [Rated Power Supply] DC5V 650mAh [Power Consumption] Approximately 4.5W [Included Items] Charging adapter x 1, Charging cable x 1, Strap x 1 - Brand: letile - Included Items: Charger - Color: White - Design: Slim and compact