Wagan EL2227-1 12 Volt Heated Travel Mug - Set of 2 Pair of two silver 12 volt travel mugs with 16 ounce capacity Heats cold beverages to about 145 degree F in less than 30 minutes Keeps coffee, tea, water or other beverages warm Maintains temperature up to 2 hours after the mug is unplugged from the vehicle Base fits all standard vehicle cup holders plus 12 volt power cord is detachable