Keep your camera or telescope lens fog-free and prevent freezing with this versatile Lens Defogging and Heating Strip. It features a USB port for easy power supply, three adjustable temperature modes, and can also be used for warming up water bottles, feeding bottles, and as a protective wrist strap or knee pad. Made of premium materials for durability. Ideal for photography in humid conditions and cold weather. 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