Mammut Barryvox S2 (current)

Published · Researched 2026-09-21

2026 lineup note: Current and in production as of September 2026 — Mammut's flagship avalanche transceiver, $599 US list. 70 m stated range, Bluetooth + Mammut app, Rescue SEND, guided fine search, deep-burial and pro-search modes. OutdoorGearLab (2026 review) calls it the most intuitive interface in test and especially strong on multiple burials. Note: the voice-prompt feature of the S2 is region-locked (disabled in AT/DE/CH/US per beaconreviews) — see Buying traps.

Version history — year by year

• Barryvox lineage: Barryvox (2000s) → Pulse Barryvox (2008) → Barryvox S (2018; WiFi) → Barryvox S2 (2022/23) — current generation: Bluetooth (replacing WiFi), Mammut app, Rescue SEND, new UI.
• 2023–2026: No generational change — same S2 platform; the Barryvox 2 (simpler, cheaper) continues below it. Year-by-year detail: UNVERIFIED beyond the stable platform.
• Recall note (CORRECTED 2026-09-20 — the original draft of this dossier wrongly said the Barryvox line had no recall): Mammut issued a voluntary recall of the Barryvox 2 and Barryvox S2 (assembly-process inaccuracy could misalign the main switch, risking unintentional switching from Send to Search or the device turning off under lateral pressure). Affected units are inspected/replaced via Mammut's recall process — check your serial at mammut.com before relying on any S2, even one bought new. (The 2021 BCA Tracker4 recall is the other beacon recall in this catalog — see that dossier.)

Overview

The Barryvox S2 is the beacon for people who want the machine to think as little as necessary under stress: three antennas, analog + digital signal processing, a MIPS display readable in any light, and a guided interface that walks you through the signal search, coarse search, and fine search with unmistakable prompts. The headline features: 70 m range (the widest in this catalog), Rescue SEND (auto-revert-to-transmit with motion sensing), Bluetooth diagnostics via the Mammut app (battery, self-test, firmware updates), marking for multiple burials, and deep-burial and pro-search modes for guides. At 181 g measured with batteries, it's the premium pick — and priced like it at $599.

Key Specs

Pricing

• US: $599.00 list — SOURCE: outdoorgearlab.com 2026 review ("$599 List").
• Street: $549–$599 typical US; the simpler Barryvox 2 runs $429–$500 — SOURCES: dealer listings (2026 crawls). EU ~€450–€520.
• The $599 buys: the 70 m range, the guided UI, Bluetooth diagnostics, and the deep-burial/pro modes — the Barryvox 2 is the same brand's value answer.

In the Box

• Barryvox S2 transceiver
• Harness/chest strap
• Batteries (AAA)
• Quick-start documentation
• Needed separately: AIARE Level 1 (or equivalent) training and regular practice — the best interface in the world doesn't replace training; lithium batteries for cold weather

Warranty

• 2-year warranty — per hardloop.com's spec table (Mammut standard for electronics). Covers manufacturing defects; antenna damage from drops, water ingress from a compromised case, and battery corrosion are excluded — which is why the pre-season function check matters.

Support & Parts

• Mammut (Seon, Switzerland; US service via Mammut North America): firmware updates via the Mammut app (Bluetooth) — a genuine advantage over non-upgradeable beacons. Beacons are not user-serviceable beyond batteries; harness replacements available through dealers.

Community Verdict

OutdoorGearLab's 2026 review — "Most Intuitive Interface," score 90 — captures the consensus: the S2's guided search flow is the easiest to follow under pressure, and its multiple-burial handling (marking + deep-burial mode) is the class of this catalog. Experienced users confirm the 70 m range is real and useful for the initial signal acquisition. The honest counterpoints: $599 is the steepest price in this catalog's beacon set, the voice-prompt feature is region-locked out in the US and much of Europe (so don't buy it for the voice), and some minimalists find the feature depth overkill for recreational touring — the Barryvox 2 exists for them.

Long-term durability & warranty-claim reality

• What owners report: The S2's housing is solid; the MIPS display and button interface have no systemic failure pattern in owner reports. The long-term story for all beacons is the same: antennas are fragile to drops, battery compartments corrode with neglect, and firmware ages — the S2's Bluetooth update path is the mitigation for the last one.
• Service life: Mammut's recommended service life was not confirmed in September 2026 sources — UNVERIFIED. (For reference, BCA recommends 5 years for the Tracker S.) Treat any "10-year beacon" claim as marketing unless the manual says otherwise; get the figure from the S2 manual.
• Warranty-claim reality: 2 years, defects only. Drop damage, water damage, and corrosion are the classic denied claims — run the trailhead test every tour and the full function check each season.

Head-to-head vs closest rivals

• vs BCA Tracker4 (new): the flagship duel. The S2 ($599, 70 m, guided UI, Bluetooth updates) vs the Tracker4 ($399.95, 55 m, simpler UI, overmolded rugged case). The S2's edge: range, interface, multiple-burial sophistication. The Tracker4's edge: $200 cheaper, bombproof case, simpler for novices. Guides and tech-comfortable tourers: S2. Everyone-else simplicity: Tracker4.
• vs Ortovox Diract Voice (new): range vs coaching. The S2's 70 m dwarfs the Diract's 50 m strip, and its marking/deep-burial modes are more sophisticated; the Diract counters with voice navigation and a lower price ($350–$450). Note the S2's voice feature is region-locked — neither beacon's voice story is clean.
• vs BCA Tracker S (existing): the S2 is the "everything the S does, plus 15 m of range, plus guided search, plus updates" — at double the price. The S remains the simplicity-per-dollar pick.

Care & maintenance

• Trailhead test every tour; full function check each season (transmit + search, all antennas, with a partner's beacon).
• Store with batteries OUT in the off-season — corrosion kills more beacons than avalanches.
• Update firmware via the Mammut app when prompted; run the group check at every trailhead.
• Never drop-test your beacon — antenna damage is invisible and fatal to range. If it's been dropped hard, send it for service.
• Keep the manual's recommended service life on your calendar (UNVERIFIED — confirm from the manual).

Buying traps

• The voice feature is region-locked: per beaconreviews, S2 voice prompts are disabled in Austria, Germany, Switzerland, and the US — do not pay the S2 premium for the voice.
• $599 vs Barryvox 2 ($429–$500): the Barryvox 2 is the same brand's simpler, cheaper beacon — if you don't need deep-burial/pro modes and the guided UI, the 2 is the value answer.
• Battery-life figures conflict (250 h vs 450 h): depends on battery type and firmware — verify in the current manual rather than trusting either number.
• Used beacons: unknowable drop history + invisible antenna damage = buy new, always, for a beacon.

Key Specs — gap-fill (Sept 2026)

• Weight conversions: 181 g = 6.4 oz with batteries.
• Certifications: EN 300718 (457 kHz) — safety compliance, separate from the 2-year warranty.
• UNVERIFIED: battery-life figure (250 h vs 450 h conflict); Mammut's recommended service life; US street price below list.

Images

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