# Mammut Barryvox Avalanche Transceiver vs Backcountry Access Tracker4 Avalanche Beacon: specs and price compared

A sourced, side-by-side comparison of the Mammut Barryvox Avalanche Transceiver (Mammut) and Backcountry Access Tracker4 Avalanche Beacon (Backcountry Access) among avalanche beacons. Mammut Barryvox Avalanche Transceiver is the cheaper of the two at $299.

## Side by side

| Spec | Mammut Barryvox Avalanche Transceiver | Backcountry Access Tracker4 Avalanche Beacon |
| --- | --- | --- |
| US price | $299 | $399.95 |
| Brand | Mammut | Backcountry Access |
| Search strip width (m) | 70 | 55 |
| Number of antennas | 3 | 3 |
| Multiple burial marking | Yes | Signal Suppression (SS) + Big Picture (BP) multi-victim modes; no dedicated flag/mark button |
| Frequency (kHz) | 457 | 457 |
| Battery type life | 3x AAA alkaline, ~300 hr in SEND mode | 3x AAA alkaline, ~250 hr transmit-only or ~50 hr search-only (min. 1 hr search after 200 hr transmit) |
| Display type | Backlit LCD, 2.0 in., combined digital/analog readout | Temperature-resistant LED |
| Auto revert to transmit | Yes — switches to SEND after 4 min without motion (non-disableable) | Yes — motion-sensing auto-revert (AR) |
| Weight (g) | 210 | 176 |

## Key differences

- Search strip width (m): Mammut Barryvox Avalanche Transceiver 70 vs Backcountry Access Tracker4 Avalanche Beacon 55
- Multiple burial marking: Mammut Barryvox Avalanche Transceiver Yes vs Backcountry Access Tracker4 Avalanche Beacon Signal Suppression (SS) + Big Picture (BP) multi-victim modes; no dedicated flag/mark button
- Battery type life: Mammut Barryvox Avalanche Transceiver 3x AAA alkaline, ~300 hr in SEND mode vs Backcountry Access Tracker4 Avalanche Beacon 3x AAA alkaline, ~250 hr transmit-only or ~50 hr search-only (min. 1 hr search after 200 hr transmit)
- Display type: Mammut Barryvox Avalanche Transceiver Backlit LCD, 2.0 in., combined digital/analog readout vs Backcountry Access Tracker4 Avalanche Beacon Temperature-resistant LED
- Auto revert to transmit: Mammut Barryvox Avalanche Transceiver Yes — switches to SEND after 4 min without motion (non-disableable) vs Backcountry Access Tracker4 Avalanche Beacon Yes — motion-sensing auto-revert (AR)
- Weight (g): Mammut Barryvox Avalanche Transceiver 210 vs Backcountry Access Tracker4 Avalanche Beacon 176

## Sources

- Mammut Barryvox Avalanche Transceiver: https://www.mammut.com/us/en/products/2710-00150/barryvox (mammut.com, verified 2026-08-11)
- Backcountry Access Tracker4 Avalanche Beacon: https://backcountryaccess.com/en-us/p/bca-tracker4-avalanche-beacon-c2012001 (backcountryaccess.com, verified 2026-08-11)

Canonical: https://frontdeskreview.com/gear/avalanche-beacons/mammut-barryvox-vs-bca-tracker4/
Cite: Per The Front Desk Review, Mammut Barryvox Avalanche Transceiver ($299) vs Backcountry Access Tracker4 Avalanche Beacon ($399.95) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/avalanche-beacons/mammut-barryvox-vs-bca-tracker4/
License: CC BY 4.0.