The Breitling Emergency is a watch made for pilots and aircrews. It has a built-in micro-transmitter that broadcasts on the 121.5 MHz aircraft emergency frequency. In case of a crash or emergency landing, the watch will emit a signal for rescuers to locate. It works alongside the aircraft's distress signaling equipment. To activate the transmitter, simply unscrew the protective cap and pull out the antenna. The signal can reach up to 160 kilometers (100 miles) over flat terrain or calm seas, assuming the search aircraft is flying at 6,000 m (about 20,000 feet). Ref. E7632110/C549.