Feature: 1. Adjustable Temperature: The electric neck brace has a 3 speed temperature control function, you can choose the right temperature according to your needs, so that you can stay comfortable and warm in different environments. Provide you with the most suitable warm experience in the cold winter. 2. Easy to Use: Just press a button to start this electric neck strap, the operating is very simple and convenient. Even the elderly can easily control it, so that you can enjoy comfortable warmth anytime and anywhere. 3. Hook and Loop: The heating neck strap is designed with a large hook and loop, which can be firmly attached to the neck and is not easy to be loosened. And you can freely adjust the tightness according to your needs, fit tightly to your skin to ensure a greater warming effect. 4. USB Powered: The neck strap has a USB interface design, which can be powered by power bank, computer, car USB and other ways, which is very convenient. No need to worry about the battery running out, allowing you to use it conveniently both indoors and outdoors. 5. Portable: In addition to having a smart constant temperature function, this hot neck belt is also very portable and lightweight, so you can take it with you anywhere. Whether you are in the office, outdoor sports or travelling, it can provide you with comfortable warmth. Specification: Item Type: USB Neck Warmer Material: OK cloth, SBR rubber, heating disc Size: Overall length Approx. 46cm / 18.11in Maximum width Approx. 10cm / 3.94in Temperature: 3 temperature adjustable. Package List: 1 x Heated Neck Wrap 1 x USB Cable