This camera lens heater is made of quality composite fiber heating wire and adhesive material with a USB port for easy use. It features 3 temperature control settings and can be used for lens heating, warming up water bottles or feeding bottles, and as a special wrist or knee strap. Protect your lens from fogging and freezing while taking photos in high humidity conditions with this efficient and versatile lens heater warmer. Featrues 1. Lens heating: Protects the lens of your camera or telescope before freezing and fogging. Perfect for taking pictures overnight or morning in somewhere with high humidity. 2. Material: High quality, made of premium material. Fit the most common devices. 3. Temperature adjustable: This product is equipped with an 150cm temperature regulator, with low(35-45), medium(45-55) and high(55-65) modes, which you can adjust the temperature according to different needs. 4. Multi-use: Great for lens heating, warming up water bottle and feeding bottle, and also can be use as a special wrist strap/knee to protect them from cold weather. 5. USB port design: It is very handy to use because you can connect it either to your power bank or any other power source with a USB port. Specification Material: Composite Fiber Heating Wire, Adhesive Material Color: Black Size: 386.5 cm, USB Cable 1.5m Weight: 80g Package Include: 1 Lens Heater Warmer 1 USB Cable