SV172 Anti-Fog Heating Strip, Lens Heater, 320 mm Temperature Regulator Anti Frost and Fog for Telescopic Camera

Convenient USB port design; You can connect SV172 dew heating band to a power source with a USB port; such as 5V power bank; car charger; laptop; desktop Protect your devices from dew fog when dew was a big problem and it can keep your devices dry; Built-in aluminum film even conducts the heating surface; no blind spot left Temperature setting; strong medium low 3 gear heating modes you can adjust the temperature according to your needs Fast and uniform heating; Constructed of aluminum for uniform heating; Alloy fiber heating wire provides very fast; Three-layer insulation material to reduce heat dissipation Designed for the telescope; a narrow width of 50mm will not interfere with focus; and will not produce dark corners in the field; it is also the width that reduces interference for other accessories on the lens barrel ...