mammut barryvox 2 transceiver for efficient and reliable avalanche safety. the mammut barryvox 2 transceiver is a compact, intuitive avalanche beacon designed for maximum efficiency in avalanche terrain. with a 70-meter range, continuous self-testing, and advanced safety features, this transceiver is perfect for both beginners and pros. stay prepared with clear acoustic search guidance, voice instructions, and display prompts.versatile modes and functionsthe barryvox 2 ensures you're always ready with features like quick-access rescue send function, compatibility with the mammut app for updates and training, and an intuitive visual interface for multiple burials. its self-test and group test functions keep everything running smoothly, while interference guard and auto-select functions enhance performance. plus, deep burial mode and auto-revert to send add extra layers of security. this transceiver works with lithium batteries for up to 250 hours of life and comes with updatable software to keep you current.