With it, you are no longer afraid of knotting your hair. Quickly smooths knotted hair, avoiding scalp damage caused by traditional combing. Specification: Quantity:1 pc Weight:231g Package Size:29*8.2*4cm Battery: 1 * AAA (not included) Specifications: 100% brand new and premium! With it, you are no longer afraid of knotting your hair. Quickly smooths knotted hair, avoiding scalp damage caused by traditional combing. Package Included: 1 x Electric Hair Comb Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings.