Instant Heating or Cooling For The Car. Don't sit shivering in your car on cold winter mornings waiting for the engine to warm up. This mini heater uses ultra-efficient PTC ceramic technology to blow out 150W of instant heat which not only defrosts the windscreen in seconds but also quickly warms the entire interior. Ideal for car, caravan or boat, the heater plugs into the 12V cigarette lighter socket. In the summer warmth, switch over to fan mode to enjoy a blast of refreshing cool air. Simply plug into you lighter socket and clamp on magnetic/self-adhesive plate or fully adjustable universal bracket (supplied).