Astromania 40cm USB Lens Heater Warmer Dew Heater Strip Stepless Temperature Regulator for Universal Camera and Telescopes Lens Less Than 315 inch 80mm in Diameter

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 Input Voltage 5V Widely applicableIt Can be adjusted and used according to the lens size and is suitable for most telescopes cameras and other lenses with an outer diameter of less than 125mm 495 inches Stepless temperature regulation This product is equipped with a stepless temperature regulation controller by sliding the knob on the controller you can adjust the temperature according to different needs Multiuse Great for lens heating warming up water bottle and feeding bottle and also can be use as a special wrist strap to protect them from cold weather 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