Garmin Enduro 4 FCC filing points to late-summer launch

A Garmin device bearing model number A05216 cleared FCC testing on 18 June 2026 — and a teardown of the Garmin Connect app published the very next day confirmed the name attached to it: Enduro 4. Taken together, the two data points represent the clearest signal yet that Garmin is preparing to launch its next ultra-endurance watch before the summer is out.

The FCC filing, logged under ID IPH-05216 and classified as a "Mobile GNSS navigator," completed initial testing between 25 March and 28 April 2026, with a revised report filed on 10 June. The APK teardown, carried out on 17 June, uncovered an explicit device entry string reading "Enduro_4," alongside an internal device ID of 5179 and category flags covering fitness, outdoor, golf and wellness, according to The 5k Runner.

What the FCC filing actually tells us

Based on documents tied to model A05216, the Enduro 4 supports Bluetooth 5.0 Low Energy and dual-band Wi-Fi across both 2.4 GHz and 5 GHz networks. It incorporates GPS with a new inverted-F antenna design, operates across a temperature range of -20°C to 50°C, and uses a proprietary charging connection rated at 10V–24V DC at 2A, with USB charging also available at 5V and 3A.

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Crucially, the filing confirms no satellite communications hardware and no LTE radio. Earlier speculation that the Enduro 4 would gain NTN satellite connectivity appears to have been misattributed. References to "expanded comms" in the Connect app teardown now look to point toward software features within a new Garmin Connect+ subscription tier — including call categorisation and expanded emergency tools — rather than any new radio hardware, according to Smartwatch Insight.

The satellite- and LTE-equipped Garmin filing is an entirely separate device. Model A05170 received FCC approval on 5 August 2026 under ID IPH-05170, listed as a wrist-worn portable digital transceiver. Its radio stack covers LTE-M bands 2, 4 and 12, NB-NTN satellite bands 23 and 255, plus Wi-Fi, Bluetooth, ANT+ and NFC. Analysis from The 5k Runner assesses this device as the Fenix 9 Pro rather than the Enduro 4.

When might it launch?

FCC regulatory clearance typically precedes a consumer product launch by approximately 60 to 90 days, placing the Enduro 4 in a late-summer to early-autumn window — broadly August to October 2026. The FCC's own confidentiality agreement prohibits disclosure of product images until mid-November, a timeline manufacturers typically set when a product is expected to go on sale before regulatory documents become public.

The 5k Runner's analysis suggests Garmin could launch four devices together in September: the Enduro 4, the Fenix 9 in both AMOLED and MIP-Solar versions, and a Fenix E2. No official launch date has been announced, and Garmin has not confirmed any of these products by name.

What Garmin has said, on two consecutive occasions, is that it expects stronger Outdoor segment performance in the second half of 2026. At the company's Q2 2026 earnings call on 29 July, CEO Cliff Pemble told investors he expected "stronger performance in the back half of the year due to the timing of product launches," describing it as "a very active year for outdoor." The same guidance had been given at Q1. No specific watch was named.

Why Garmin needs this to land

The business context adds urgency. Garmin's Outdoor segment revenue fell 5% in Q1 2026 and a further 2% to $483 million in Q2, making it the segment's third negative quarter in the past four, according to Garmin's own earnings reports. The company is leaning on its H2 product pipeline to reverse that trend, which makes a schedule slip commercially costly.

How it fits the Enduro lineage

The Enduro series has followed a broadly two-year cadence: Enduro 2 arrived in August 2022, Enduro 3 in August 2024. Each generation has roughly doubled GPS battery life — 80 hours, then 150, then 320 — with the Enduro 3 offering up to 120 hours in single-band GPS mode without solar, around 77 days in Expedition mode without solar, and up to 130 days with solar charging active. The Enduro 4 is expected to maintain the series' MIP-display, solar-charging identity, preserving the battery-life leadership that defines it.

What UK buyers should do right now

• Don't buy an Enduro 3 at full price. Some UK retailers are already selling the Enduro 3 for as little as £699.99. If you were going to pay close to its original £770 RRP, wait — a successor appears weeks away.
• Don't expect satellite messaging. The Enduro 4 will not add integrated backcountry satellite SOS. You will still need a separate Garmin inReach device. If that feature matters to you, the Fenix 9 Pro filing is the one to watch instead.
• Expect a similar price point. UK pricing for the Enduro 4 has not been confirmed. With satellite and LTE hardware ruled out, analysts expect pricing in line with the Enduro 3's launch price. UK buyers should plan accordingly, though nothing is confirmed.
• Watch for a Connect+ subscription. The app teardown suggests a new software tier is incoming alongside the hardware, potentially including AI coaching features and expanded emergency tools.

Garmin has not responded to requests for comment on any unannounced products.