Characteristic:1. Electric heating scarf, suitable for outdoor activities such as mountaineering, to prevent neck frostbite in low temperature climate.2. The heating element adopts graphene material, which has high thermal efficiency and flexibility.3. With large-area heating design, the entire neck is heated evenly for comfortable and warm warmth.4. Ergonomically designed, adopts 3-level temperature control, it is an indispensable heating product in harsh winter.5. With USB interface, you can use 5V mobile power supply to charge, safe and reliable, and easy to charge.Specifications:Item Type: Heated ScarfMaterial: Polyester fiberPower supply type: USB power supplyNominal voltage: 5VPower: 5WHeating temperature: 42-58Body Care Parts: Knee Pads, Shoulder Pads, Waist Pads, Leg PadsProduct function: Graphene heatingProduct selling point: Keep warmController Equipment: 3-speed regulationWeight: Approx. 197g / 6.9ozSize: approx. 85x9.5cm / 33.5x3.7inInstructions for use:1. Long press the heating button for 2 seconds to turn on the hot compress mode, and the red light is high temperature hot compress, hot mode, constant temperature heating 552. Short press the heating button, the white light is medium temperature hot compress, comfortable mode, and the constant temperature is 483. Short press the heating button again, blue light is low temperature heat compress, power saving mode, constant temperature heating 384. Long press the heating button for 2 seconds to directly turn off the hot compress functionPackage list:1 x heated scarfNoticed:1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.