***** **********Best Quality Guranteed. *****Super fast and continuous warming with fast start up of 5 seconds to heat*****Protects the lens of your digital camera or finder scope from freezing by chilling fog and dew,; enabling the devices to function properly at night when the temperature drops or places with bad weather*****Based on the 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*****DN40: the length is 40cm, for
outside diameter: 13cm, lens UV size is less than 110mm*****With adjustable diameter and easy adherence; this dew heater strip fits to most size of telescope; finder scope; digital camera; One heater strip to warm them all