Featuring an easy-to-read, high-contrast display and 45mm watch case, the G1 Series is purpose built for SCUBA diving in both form and function. Depth rated to { 330 fsw | 100 msw } with leakproof inductive buttons and a sapphire lens, the Descent G1 Series is rugged and ready. The Descent series includes mixed-gas decompression dive computer functionality in a premium smartwatch with activity profiles, performance metrics and smart notifications. The Descent high-resolution transflective memory-in-pixel (MIP) monochrome display assures readability in all dive conditions including bright sunlight.

Once underwater, the Bühlmann ZHL-16C decompression algorithm with user configurable Gradient Factors allows individual control of your dive computer decompression calculations and stop depths. Full color graphics plus tone and vibration alerts help keep you informed while you’re submerged. During a decompression dive, the Descent can provide time-to-surface based on "look ahead" at planned gas switches along with current ceiling and stop time. Multiple gas definition presets are supported with any combination of air, nitrox, trimix and oxygen. For technical dives, the Descent is user configurable to NOT "lockout" after a missed stop. Even underwater (if worn next to the skin), the Descent is able to measure and display your actual heartbeat rate.

On land, the Descent also functions as a robust training and outdoor companion. The Descent G1 Series delivers a multitude of wellness features including advanced sleep monitoring with sleep score and features a variety of built-in indoor and GPS sports apps with favorites that include swimming, hiking, running, cycling, golf, yoga and surfing. With the integrated Surfline Widget, surfers will see a visual representation of tide information, wave height, wind, and surf quality rating right on the wrist. The G1 Series will track and measure performance with Garmin’s full suite of advanced fitness features. Thanks to built-in Bluetooth, it supports notifications from a paired smartphone.

Diving Features, Functions and Alerts Highlights:

• Decompression dive computer with {0.9 inch | 23 mm} 176 pixel monochrome display in a richly featured multi-activity smartwatch
• Built-in sensors include depth, temperature, 3-axis compass, gyroscope, barometric altimeter and heart rate with pulse oximeter
• Supports open-circuit single-gas, multi-gas, closed-circuit rebreather (CCR), gauge and apnea (free-diving) modes
• Plan your dives directly on the device, including planned deco with gas switches
• Supports a bottom gas plus up to 5 decompression/backup gas mixes including air, nitrox, trimix and 100% oxygen
• Bühlmann ZHL-16c algorithm with configurable Gradient Factors
• GF presets for sport diving NDL safety factor: High = 35/75, Medium = 40/85, Low = 45/95
• Depth rated to { 330 fsw | 100 msw }, designed to comply with EN13319
• Various alerts (tone, vibration, display) for:
  
  
  • CNS Warning >= 80% and CNS Critical >= 100%
  • OTU Warning >= 250 and OTU Critical >= 300
  • NDL Warning >= 80% of inert gas limit and NDL Exceeded
  • PO2 Low < 0.18 ATA (suppressed first two minutes of dive)
  • PO2 High and PO2 Critical (user configurable up to 1.6 ATA)
  • Ascent rate fast >= {30 fpm | 10 mpm} for >= 10 seconds
  • Gas switch suggested (based on enabled gas list and selected switch PO2)
  • Approaching deco stop, deco stop completed and all deco complete
  • Depth Ceiling violation if above ceiling by {2.0 ft | 0.6 m}
  • Multiple user configurable depth and runtime alerts
  • User configurable safety stop
  • User configurable units: imperial (feet, psi) or metric (meters, bar)
  • Battery Low < 20% and Battery Critical < 10%
• Missed deco lockout can be disabled prior or post dive with user acknowledgement
• On device dive log lets you store and review data from up to 200 dives
• Store and share unlimited dive log online via Garmin Connect™ and its included mobile app
• Bluetooth Smart supports wireless connectivity to Apple and Android smartphones
• Battery life: Varies depending on features enabled - Dive mode: Up to 25 hours, Smartwatch Mode: Up to 3 weeks. Enabling the GPS significantly impacts battery life.
• Construction material is a fiber-reinforced polymer body, bezel and back with sapphire crystal lens along with a silicone wrist band.
• Physical case size is {1.79 x 1.79 x 0.60 inch} or {45.5 x 45.5 x 15.2 mm}

What's in the box? - The box contains the Garmin Descent G1 multi-activity GPS smartwatch and dive computer with 2pc integrated hinged silicone wrist band and removal tool, along with a charging cable and quick start guide. Separately ordered optional Garmin accessories include QuickFit 22mm wrist bands in choice of colors and additional USB data & charging cables. If you want a well padded case suitable for boat use and with room for extra storage, consider adding the optional DGX Padded Storage Bag.