Heating Scarf USB Heating Neck Protection Cold Invisible Zipper Scarf Features: 3-speed true temperature control, temperature, three-color indicator design, different colors correspond to different temperatures, cool respond to different weather Smart 3-second fast heating, "relax" anytime, anywhere, increase the heating area and lightly surround the entire neck [5V low voltage] It is safer to use, the heating works at low voltage, and the multiple protection system just conducts heat, not conduct electricity It can be washed all over the body like ordinary scarves. When washing, make sure that the power bank has been removed. Warm with you throughout the winter, the heating scarf not just warms people but also warms the heart, and can be used in multiple scenarios. Different colors are available, for winter fashion A key to start, long press for 3 seconds to turn on, long press for 3 seconds to turn off USB power supply, suitable for any small and thin power bank Specification: Material: mink fleece Size: About 10x85cm/3.9x33.5in Package List: 1x scarf Notes: Due to different displays and lighting effects, the actual color of the product may be slightly different from the color shown on the picture. Thanks! Due to manual measurement, please allow slight measurement deviation.