Lens Heater, 3 Adjustable Temperature Anti-Dense Anti-Dice, USB Heater for Universal Camera and Telescopes, Size (425 mm)

Safety Protection: The dew heater protects the lens or digital viewfinder from freezing due to cold fog and dew, allowing the device to work normally even when the temperature drops or the weather is bad at night. Three Speed Temperature Control: The heating' lens can connect it to a portable power supply or any other power device with a USB port, so it is very easy to use. USB port design: you can connect it to a portable power supply or any other power device with a USB port, so it is very easy to use. Wide application: the heater 'lens can be adjusted according to the size' lens and easy to connect, suitable for most sizes of telescopes, viewfinders, digital cameras and so on. Hook and Loop Fixer: The lens heater is fixed by hook and loop fasteners, which do not allow the heater to fit the lens, but also allow for quick removal and adjustment of the desired length.