Garmin Fenix DESCENT Preview & Specifications

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Garmin DescentWell, it’s called the Garmin DESCENT but it’s basically the FENIX in all but name.

It is tested a bit more heavily and built even more robustly than the Fenix 5X.


Target Market

Breathe Easier, Dive Better

Even at $1000, Garmin target recreational, technical and free diving.

Key Dive Features

  • Auto-activation on submersion
  • Dive metrics: current depth, dive time, water temperature, ascent/descent rate, no-deco time, decompression stop information, battery life and more on the unit’s crisp 1.2” color display.
  • Gas conservatism settings
  • 6x supported gas mixtures (Nitrox, Trimix, 100%O2)
  • Underwater compass
  • Tilt-compensated 3-axis electronic compass keeps bearing regardless of movement
  • Screen locks to avoid unintended presses


Detailed Diving Features

Dive activity maximum operating depth100 meters (Designed to comply with EN13319)
Single-gas modeYes
Multi-gas modeYes
Gauge modeYes
APNEA modeYes
APNEA hunt modeYes
Decompression modelBühlmann ZHL-16c with gradient factors
Nitrox supportYes
Trimix supportYes
Gas mixesAir, nitrox and trimix, up to 100% O2; 1 bottom gas, and up to 5 deco and/or backup gases
P02Up to 1.6 with customizable deco PO2 setting
Auto start/end diveYes
Custom end-dive timeoutSim (20 s a 10 m)
Safety Stopyes (customizable off/3min/5min)
Deep Stopsyes (using custom gradient factors)
Customizable conservatismyes (low/medium/high or custom using gradient factors)
Dive ascent/descent rate indicatorYes
Automatic altitude adjustmentYes
No fly timeyes (with 24hr countdown)
Dive planneryes (basic NDL + multi-gas deco planner)
Backlightyes (configurable time and intensity; auto-on at depth)
Automatically saves dive entry and exit locationsYes
Sync dive log to Garmin Connect™ and Garmin Connect™ MobileYes
Alerts & alarmsAudible and vibration alarms for ascent rate, PO2, CNS/OTU, NDL, deco, gas switching. Customizable (up to 40) audible and/or vibration per dive mode, based on depth or time
3-axis dive compassyes (with adjustable heading, quick change to 90R, 90L and reciprocal). Indicates degrees and direction back to set heading
Missed Deco Lockoutyes (can be disabled prior to dive with user acknowledgement)
Residual Tissue Loading Resetyes (on the surface with user acknowledgement)
Surface diver status widgetyes (surface interval, N2/HE loading, CNS, OTU and tissue compartment status)



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1 thought on “Garmin Fenix DESCENT Preview & Specifications

  1. Never ever would I or will I dive with a Grrmin. For easy dives (PADI Open water) no one needs a computer like that – a simple ZOOP is perfectly fine/reliable.

    For “advanced dives” (multiple dives, mixed gas, gas switching, oxygen, fair/solid amount of deco time) you need something you really rock solid – Petrel/Perdix, OSTC+/2/4 are good choices.

    For dive guides (DM, Instructor) a D4i/D6i is plenty enough – and reliable.

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