USB interface; plug into a USB power adapter; a portable charger; the USB cable makes lens warmer ideal for indoor and outdoor use
Temperature range; working temperature adjustment range from 25 degrees to 70 degrees to suit different weather environments
Fastener design; with handy fasteners; the SV172 dew heater strip can wrap around your lens or scope with security and is easy to adjust
430mm effective heater length; liminate dew; fog; and condensation with our specially crafted lens warmer during cold weather photography
For other applications; as a multipurpose lens heater warmer with a whole length of 500mm; it can also keep your baby bottle and coffee cup warm in winter days