USB powered lens heater, with variable control. Avoid dew and condensation on your lens when shooting at night. 

Simply plug into a USB battery block when shooting in the evening, great for time lapsers and astro-photographers! Will avoid dew and condensation forming on your lens at dawn and dusk. 

Controlled with a variable heat to save battery, and strong hook and loop style fastening to fit most lens. 

Fits lens with diameter xxxx to xxxx