SVBONY SV172 Lens Warmer, 400mm Lens Heater Warmer Dew, 3 Gear Regulator Temperature USB Universal Dew Heater Strip for Telescope Camera

About this item

• Universal lens warmer;Lens Warmer prevents telescope camera lens from fogging dew by warming up the lens on a camera or telescope; it also warming up water bottle and use as a knee strap
• USB port design ;1.8m usb cable length you can connect it your power bank or any other power source with a USB port; 1.9A to 2.0A input current; 5V input voltage
• Temperature regulator adjustable; strong medium weak heating modes that you can adjust the temperature according to your requirements
• Design for telescope; 50mm bandwidth does not affect the focusing and no dark angle of the field of view; fit lens outer diameter below 127mm
• Heating fast and evenly;built in aluminum make heating evenly; Alloy fiber heating wire provides super fast; Three layer insulation material to reduce heat dissipation