1Seg, get it? -- is twice as good. The device switches automatically from terrestrial digital broadcasts to mobile 1Seg reception when the signal deteriorates with the car's increasing speed. The TU-DTX300 works with Panasonic's Strada F class car navigation/entertainment system with support for an EPG and alerts from Japan's EWS (emergency warning system). It measures just 178×130×27-mm (7×5.1×1.1-inches) and costs ¥94,290 (about $780) when this pup hits February 23rd.