Camera Lens Heater USB Interfaces Heating Defogging Heater Heating Sheet For Camera Lens Temperature RegulatorFeatures:brand new and Specially designed for camera lens and telescopes.Prevents condensation by warming up the lens on camera or With low, and high heating mode.Runs on external USB power.Adopts low temperature cable can with stand temperature as low as -40°C.Hook-and-loop fastener makes it fast and easy to attach and remove.Specifications:Diving ClothLength:Approx.39-48 for cm/15.35-18.89 Length varies by different-batch)USB Cable Length:Approx. 85cm/33.46 Package Includes:1x Lens HeaterNote:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.