Barryvox is avalanche beacon from production of Swiss company Mammut. It is digital - 3 antenas new generation beacon with easy control. Also automatic switching from search to send in case of secondary avalanche is included. Maximum range in digital mode is 70m. The important parameters is alkaline battery life in SEND mode 300 hour and in SEARCH mode 1 hour. Transceiver showing direction, distance and number of buried and can process miltiple signals at once. The Barryvox has function mark - mark the buried.