Features: Electric Heating Scarf:The scarf generates heat in a large area and is designed according to ergonomics which is warm and comfortable and has an obvious warmth retention effect. One-button Heating:One-key heating to achieve temperature cycle in the scarf no drying no fire one second rapid heating three temperature settings according to the environment you can adjust the appropriate temperature red gear 50-55 white gear 45-50 blue File 40-45. Heating up Fast:Through graphene heating technology soft film heating material rapid heating from the inside out USB charging head is connected to 5V battery need to connect mobile power supply to heat hide battery bag is easy to use the battery can be put into the battery bag (this product does not include power bank included). Practical and Convenient:Heated neck warmer can be washed without dismantling saves worry and effort can be washed repeatedly and has an anti-leakage design which is easy to use. High-quality Materials:The outer material is made of short plush fabric the inner is made of thermal insulation cotton fabric ergonomically cut Heating Scarf is durable and warm soft and comfortable. Specification: Name: Electric heating scarf Temperature: 40-55 Voltage: 5V Material: short plush fabric + thermal insulation cotton lining Size: about 80x10x1cm/31.5x3.9x0.39in includes: 1 x Electric heating scarf 1 x USB cable