BC Link 2.0 radios help find separated friends, communicate plans, stick your line, and share observations in real-time. The Smart Mic user interface is located at your fingertips—no need to change settings, no need to dig the radio from your pack. The battery lasts for several days without recharging, even in cold temps. BC Link radios are compatible with all BCA airbags, backpacks and vests. BC Link radios are tough enough for winter days in the backcountry and perfect for year-round use.