Features:_x000D_With a 6ml serum cabins in the middle of the brush, it can help you apply essential-oil evenly and easily while massaging your scalp. _x000D_Tooth-tip Massage: The massage relaxes the head muscles, andcontinuously removes debris, dirt, and oil from the scalp. All you have to do is move-it to different parts of scalp while the bristles do all the work. It feels like a steady continuous pinching and releasing in a pleasant way. The massage feels especially great around the back of scalp and nape of neck._x000D_Waterproof, no problem with rinsing, super waterproof performance, clean, hygienic, unclogged, safe, and comfortable._x000D_Red light works right in the dermis to promote enhanced collagen and elastin production. Notice improved skin elasticity and texture with regular red light treatments._x000D_Perfect for on-the-go hair care, it's an excellent choice as a thoughtful present for family and friends on birthdays, as souvenirs. _x000D_Notice:_x000D_1.Actual color may be slightly different from the image due to different light effect_x000D_2.Please allow 1-3cm deviation due to manual measurement_x000D_ Size: 21x8.5x5.7CM_x000D_Rated voltage: 3.7V_x000D_Rated power: 5W_x000D_Battery capacity: 1400mAh_x000D_Charging interface: Type-C_x000D_Package: Electronic Red Light Hair Massager USB charging cable storage bag manual color boxPackage List:_x000D_1 Set Electronic Red Light Hair Massager