This article brings the description of high speed tilting trains of Czech Railways destined especially for international service through the so called transit corridors. The EMU consists of following cars: class 681 (head powered car, first class), 081 (intermediate non-powered car, first class), 683 (intermediate powered car, second class, snack bar), 084 (intermediate non-powered car, second class), 684 (intermediate powered car, second class), 082 (intermediate non-powered car, second class), 682 (head powered car, second class). The train could be used on electrified lines of three systems: 3 kV DC, 15 kV 16,7 Hz and 25 kV 50 Hz AC. The maximum speed is 230 km/h which could not be used on the lines of Czech Railways not even after the finished reconstruction.