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
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 wrist knee strap
Fit external diameter below 76mm; 50mm narrow width does not interfere focusing and will not produce dark corners in the field; 66g or 2.32oz net weight will not be a burden for your telescope
For other applications; as a multipurpose lens heater warmer with a whole length of 500mm; it can also keep your bottle and coffee cup warm in winter days
430mm effective heater length; liminate dew; fog; and condensation with our specially crafted lens warmer during cold weather photography
Description
SVBONY SV172 Lens Heater Warmer Dew, 240mm 3 Gear Regulator Temperature USB Universal Dew Heater Strip for Telescope Camera SVBONY SV172 Lens Warmer, 430mm Dew Heater Strip, Lens Heater Warmer with PWM Function, Lens Warmer with USB Interface for Telescope and Camera