Features: 【Effective 20"/500mm Heater Length】Eliminate fog and condensation with our specially crafted lens warmer for cold weather photography. Suitable for lenses or telescopes up to 18.7"/475mm circumference and 150mm diameter. 【USB】Conveniently powered by USB, our lens heater can be plugged into various power sources offering a USB 5V 2A output. The 4.9ft/1.5m long cable allows for flexible indoor and outdoor use. 【Ideal for Photography Enthusiasts】Designed for photographers and outdoor enthusiasts, this lens heater provides a reliable solution to prevent fog on lenses during photo claps in cold weather conditions. 【Versatile Usage】Not only suitable for lenses and telescopes, but also serves as a multipurpose heater. Keep your cup warm in winter or use it to warm your wrist, elbow, and ankle when feeling chilly. 【Improve Your Photography Experience】With our lens heater, you can capture clear images even in chilly weather. Say goodbye to misty images caused by foggy lenses and enjoy an improved photography experience. Specifications: Material:TPU+Leather Size:Approx.45x5cm/17.71x1.96inches Package Includes: 1Piece Lens Heater Belt note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!