[Remove Fog]: The USB heater can quickly remove the fogging of the camera lens or telescope in low temperature and high humidity environment; The lens warmer strip uses an external USB power supply is convenient to carry around | [Adjustable Strip]: The lens warm strip is fixed with the help of a hook and loop fastener. lens heater can be adjusted to fit your lens by adding or reducing the length according to your requirement. This strip is convenient and quick for you to disassemble and adjust it | [Easy Removing and Adjustment]: The dew heater lens warmer is fixed by a hook and loop fastener, which allows for easy fitting of lens size. This makes dew heater strip for telescope easier to remove and adjust the lens | [Won't Freeze Hard]: The lens warmer strip can withstand low temperatures, and lens warmer will not freeze hard after long-term use in a cold environment, lens warmer is convenient for disassembly and adjustment, which can satisfy your needs well | [Superior Performance]: The camera lens warmer has high heat transfer efficiency and good heat preservation effect, and prevents the lens from fogging through heating that can make you feel assured of the lens heater warmer