3 TEMPERATURE MODES: The heated scarf has three temperatures: high temperature (red) 50-55, medium temperature (white) 45-50, and low temperature (blue) 38-42. Need to connect mobile power(Note: The battery is not included with the product). USB plug compatible with most power bank in the market NECK WARMING SCARF: Muscles aro the neck contract due to chilling, and fatigue can accumulate on the neck and shoulders, causing neck stiffness and shoulder stiffness. Neck heating pad, on back of neck works as neck heat pad to keep the back of your neck warm and coze QUICK AND LONG-LASTING WARMTH: Wearable thermal wear designed electric fleece heated scarf features a heated neck wrap that warms you up in 3-5 seconds. It doesn't get too hot on your neck but stays at a nice warm temperature. The internal heating element is made of high quality carbon fiber and is heated quickly, safely, stably and warmly HEATED SCARFS FOR WOMEN: Heating scarf can be usd as a shawl, a scarf, a simple blanket, and it is convenient and cold-proof for office home automotive outdoor and appointment use, etc. Ideal for Wedding, Christmas, Birthday Gift, Anniversary, Valentine's Day, etc