Features:
· Designed for astronomy telescopes, and compatible with DSLR camera lens: protecting optical devices like telescope and camera from fogging or freezing. It can be used for heating baby bottles or feeding bottles indoors or outdoors. Can be used as a wrist strap or knee strap to protect you from cold weather or emergency condition.
· Convenient USB port design; connect it to power source with USB port, such as 5Vpower bank, car charger, laptop, desktop computer, etc.
· Three gear regulator with strong-medium-weak Heating Modes. You can adjust the temperature for different use requirements. Super-fast and continuous warming with fast start up to heat.
· 50mm narrow width does not interfere focusing, and will not produce dark corners in the field; it is also the width that reduces interference for other accessories on the lens barrel.
· Good keep warm effect: imitating OK cloth, SBR and Black-T three-layer keep warm material reducing heat dissipation, and the inner surface does not wrinkle after being bent. It fits the lens barrel better and which increases the keep warm effect.
· Even heating: the built-in aluminum film conduct even heating surface, no dead angle left.
· Safe usage and short circuit prevent. Alloy fiber heating wire provides super-fast and continuous warming. Silicone insulation process prevents internal short circuit.
Specifications:
· Brand: SVBONY
· Model: SV172
· Dew Heater Strip of approx. Work Length: 240mm / 320mm / 400mm
· 400mm Fits outside diameters less than 127mm / 5"
· 320mm Fits outside diameters less than 102mm / 4"
· 240mm Fits outside diameters less than 76mm /3"
· Interface Type: USB Type-A
· Input Voltage: 5V
· Input Current: 1.45A~1.55A(240mm); 1.8A-1.9A (320mm); 1.9A~2.0A (400mm)
· Temperature Adjustable: Yes
· Power Cable of Length: 1.8M
· Dew Heater Strip of material: Imitation OK cloth + SBR + Black-T +Aluminum Film+ PU
· Power cord material of material: Nylon
Package Includes:
· SV172 USB Dew Heater Strip
· Carrying Case Package
· Three Position Thermostat
· User Manual