Deep Dive Digest #22: Garmin’s September Fenix Crop, CIRQA Post-Launch Insights & Three Reviews

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Multiple, new Garmin filings now point to a full crop of next-generation Fenix devices in September: Fenix 9 AMOLED, Fenix 9 MIP Solar, Fenix E2, and Enduro 4 are all in the frame. A Fenix 9 Pro inReach special with LTE-M and Satellite may follow as early as January 2027. If the September window holds, this is the most significant Garmin hardware moment since the Fenix 8 generation, and the filing details are examined in full on site.

CIRQA has now been in the market long enough for a pattern to emerge. A sourced list of bugs drawn from Garmin Forums and Reddit covers sensor dropouts and connectivity failures.

Then we look at the King of Bands. A five-way comparison (CIRQA against Whoop MG, Polar Loop, Fitbit Air, and Amazfit Helio Strap Pro) ranks each device on the genuine factors that people consider when buying for daily wear and training use, rather than rehashed spec tables. CIRQA is competitive on most of them.

Two reviews this week. The Amazfit Balance 3 is the first sports watch built explicitly for HYROX, with dedicated race modes tested in a full simulation. The Fourth Frontier X Plus is an FDA-cleared ECG chest strap tested side by side against a clinical 12-lead ECG. Both pieces go into the details that matter.

Elsewhere: Coros Pace 4 Pro has appeared in Indonesia’s SDPPI database. Motorola has an unannounced 46mm smartwatch in leaked renders. The Google Pixel Watch 5 leak confirms new colours and more memory on the same processor, a minor refresh dressed as a generation.

Garmin Fenix E2, 9 AMOLED, 9 MIP SOLAR, 9 Pro and Enduro – likley dates and evidence

Garmin Fenix E2, 9 AMOLED,  9 MIP SOLAR, 9 Pro and Enduro – likley dates and evidence

A new Garmin filing carries LTE-M and satellite hardware missing from the Fenix 9, Fenix E 2 and Enduro 4 filings already spotted. Here’s what the numbering means for launch timing.

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Coros Pace 4 Pro Leaked

Coros Pace 4 Pro Leaked

A Coros Pace 4 Pro has surfaced in Indonesia’s SDPPI database under model number W337, filed by distributor PT Denka Pratama Indonesia. The filing points to a launch within weeks.

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Garmin CIRQA – All the Bugs So Far

Garmin CIRQA – All the Bugs So Far

A grouped, sourced list of Garmin CIRQA bugs from Garmin Forums and Reddit, covering sensor dropouts, alarms, Body Battery, HRV and workout data.

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Amazfit Balance 3 Review: HYROX Watch Tested

Amazfit Balance 3 Review: HYROX Watch Tested

The Balance 3 is the first sports watch built for HYROX, with dedicated race modes and a hybrid recovery score. GPS trails the Balance 2, but heart rate holds up well.

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Fourth Frontier X Plus Review: FDA-Cleared ECG Chest Strap

Fourth Frontier X Plus Review: FDA-Cleared ECG Chest Strap

A clinical 12-lead ECG and the Fourth Frontier X Plus, tested side by side. The X Plus matched rhythm, rate and QRS shape exactly, then held that accuracy through a cycling session and a hard running effort.

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CIRQA vs WHOOP vs LOOP vs Fitbit Air vs Helio Strap Pro

CIRQA vs WHOOP vs LOOP vs Fitbit Air vs Helio Strap Pro

Five screenless trackers now compete for the same wrist. This comparison ranks Garmin CIRQA, Polar LOOP, WHOOP, Amazfit Helio Strap and Fitbit Air on cost, app quality, battery life and buyer fit.

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Motorola Moto Watch Ultra leak: what’s confirmed so far

Motorola Moto Watch Ultra leak: what’s confirmed so far

Leaked images reveal an unannounced Motorola smartwatch running the internal name Moto Watch Ultra. A 46mm stainless steel case, built-in LTE and GPS, and IP68 protection are confirmed. Price, release date and operating system remain unknown.

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Google Pixel Watch 5 leak: all we know so far

Google Pixel Watch 5 leak: all we know so far

Just in new colours. Inside, it’s the same processor as before, but with more memory to help the on-device Gemini AI assistant run properly. A price rise looks likely too.

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The Deep Dive Podcast

Listen to one of our recent discussions on the Deep Dive podcast – EP73 Can Amazfit Hardware Outrun Garmin Software (ft. AI Insights)


Browse every edition in the Deep Dive Digest archive.

Previous edition: Deep Dive Digest #21

Last Updated on 8 October 2026 by tfk the5krunner


Small things I always use

Watches and sensors

On the bike

Home and indoor training

  • NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
  • Google Wifi: Keeps Zwift connected in my pain cave. I use it.
  • Apple TV 4K: Zwift on the big screen. I use two.
  • Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.

Health, recovery and sleep

  • FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
  • hDrop: Measures my sweat loss in summer and indoors.
  • Fourth Frontier Zone: Checks my heart under load in hard sessions.
  • Kineon MOVE+: Red and infrared light for sore knees, Achilles and other joints after hard training. I use it.
  • Oura Ring 5: My partner’s recovery tracker of choice.
  • Eight Sleep: A cooling mattress cover my partner and I use nightly.


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