Descent™ G1

Garmin Descent™ G1 (Slate Gray)

The Garmin Descent G1 (Slate Gray) is a rugged dive smartwatch built for both underwater diving and everyday training. It supports multiple dive modes from technical to freediving, uses surface multi-GNSS to mark entry/exit points, and stores up to 200 dives you can review in the Garmin Dive app.

Key Features

• Rugged dive-rated build with sapphire crystal lens and 100 m dive water rating

• Stores up to 200 dives and syncs logs with the Garmin Dive app

• Up to 25 hours in Dive Mode (plus long smartwatch/GPS battery options)

• Built-in 3-axis dive compass for underwater navigation

Navigation and GPS

• Surface multi-GNSS helps track and mark your surface entry and exit points

• Supports GPS, GLONASS, and Galileo for stronger satellite coverage on the surface

• Automatically saves dive entry and exit locations

Display and User Interface

• Display: 0.9” x 0.9” (23 x 23 mm) custom two-window design

• Resolution: 176 x 176 pixels

• Display type: monochrome, sunlight-visible, transflective memory-in-pixel (MIP)

Diving Modes and Capabilities

• Dive modes: single-gas, multi-gas, gauge, apnea, and apnea hunt

• Decompression model: Bühlmann ZHL-16c with gradient factors

• Nitrox and trimix support, plus multi-gas planning and dive data screen customization

• Alerts and alarms for ascent rate, PO2, CNS/OTU, NDL/deco, and gas switching

Extras for Technical Divers

• Closed-circuit rebreather (CCR) mode support

• Gas mixes: Air, Nitrox, and Trimix up to 100% O2; 1 bottom gas and up to 11 deco and/or backup gases

• PO2 up to 2.0 with customizable deco PO2 setting

• Basic NDL + multi-gas deco planner

Perfect For

• Recreational divers who want a compact, watch-style dive computer

• Technical divers needing multi-gas (nitrox/trimix) and CCR support

• Freedivers who want dedicated apnea and apnea hunt modes

• Divers who want GPS to mark surface entry/exit points

Fit and Sizing

• Case size: 45.5 x 45.5 x 15.2 mm

• Weight: 61 g

• Band compatibility: QuickFit 22 mm

• Silicone band length: 128–224 mm (extra-long band: 128–373 mm)