Integrated lightweight design, controller can display real-time temperature, 3-speed temperature control mode, user can operate with single hand without affecting photography Specially designed for lenses of different diameters ( such as 49-95mm) and eyepieces, with multiple installation methods and a tight fit Supports USB C / USB portpower supply ( 5V / 1-2A), compatibility with mobile power such as and camera batteries, with low power consumption It is also suitable for optically equipment such as sports cameras, UAV lenses, telescopes, microscopes, diving and more It is a practical anti fog tool for outdoor photography, astronomical observation, scientific research and investigation Built in over heat protections circuit, with temperature not exceeding 50 ℃, ensuring the of the equipment and lens