If you live in a cold climate, or struggle with heating your car during the winter, this heater and defroster that sits perfectly on your windshield will be your new favorite car accessory.
Features:

Instant heating, automatic overheat protection. 
 Use tape (not included) or screw (not included), with handle.
Dimensions: 5.11 in L x 4.33 in W x 2.75 in H 
Compact portable device with fan and thermal settings. 
 Brushless motor makes silent operation and efficient heat dissipation design.
 Easy to install, just plug it into the cigarette lighter socket
 Suitable for a variety of 12V cars.