Mammut, Ortovox, BCA and Arva have all issued beacon recalls in the last few seasons, and I've personally witnessed a BCA Tracker 4 and a Mammut Barryvox S mysteriously fail on ski tours this year.

The beacon takes three AAA lithium or alkaline ... As a baseline for the multiple-burial test, we buried two identical Mammut Barryvox S beacons in a large flat area, under 50cm of snow.

This would potentially render the beacon useless in the ... This year, Mammut issued a product recall on their newly-released Barryvox 2 and Barryvox S2, while Black Diamond/Pieps issued a recall ...