[Prevent Lens Form Fogging]: The lens warm strip provides efficient heat transfer and good heat preservation, so USB dew heater strip prevents fogging of the glasses; The USB lens warmer is made of high quality materials with fast heat transfer and good thermal insulation | [All-in-one Design]: The camera warmer is convenient for outdoor use. dew heater for camera lens features an external USB power supply, lens warmer for dslr camera is convenient to store and avoids a loss; USB port design, camera lens dew heater is suitable for long-term outdoor heating of the lens | [Easy Removing and Adjustment]: The dew heater lens warmer is fixed by a hook and loop fastener, camera lens heater warmer 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; USB dew heater telescope prevents condensation by warming up the lens on a camera or telescope | [Remove Fog on Lens]: This camera lens warmer can remove the fogging on the camera lens or telescope in low temperature and high humidity environments