12V Coffee Mug Warmer Travel Mug Coffee Warmer (12 Volt Car Lighter Plug) 12 Volt Car Lighter Adapter Plugs Directly Into Vehicle's Cigarette Lighter 39 Inch Total Product Length (Actual Cord Only Length: 32 Inches Clip Holder Keeps 12 Volt Beverage Coil on Side of Mug/Cup Immersion Heater Coil Keeps Coffee Warm Quick and Easy Installation and Use