SVBONY SV172 Dew Heater Strip Lens Heater Warmer for Telescopes and Camera Lens Temperature Regulator Strip

Features 1 Designed for astronomy telescopes and compatible with DSLR camera lens protecting optical devices like telescope and camera from fogging or freezing Compatible with lens outer diameter below 127mm 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 2 Convenient USB port design connect it to power source with USB port such as 5Vpower bank car charger laptop desktop computer etc 3 0 3meters 3 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 4 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 5 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 6 Even heating the built in aluminum film conduct even heating surface no dead angle left 7 Safe usage and short circuit prevent Alloy fiber heating wire provides super fast and continuous warming Silicone insulation process prevents internal short circuit Specification 1 Brand SVBONY2 Model SV1723 Dew Heater Strip of Size 400 5