Garmin D2 Air X15 – A Buyer’s Guide

The D2 Air X15 is Garmin’s latest aviator smartwatch, released alongside the flagship D2 Mach 2. The D2 Air X15 is aimed at those who prefer a sleek, lightweight form factor and is positioned as a good blend of pilot-oriented tools and modern design. It retains many classic features expected from the D2 family, including aviation navigation, flight logging, health monitoring, and fitness tools. It also incorporates new, powerful capabilities like a built-in flashlight and voice commands.

Model	Release Date	MSRP
D2 Air X10	March 21, 2022	$549.99
D2 Mach 1	March 28, 2022	$1,299.99
D2 Air X15	October 22, 2025	$649.99
D2 Mach 2 47mm	October 22, 2025	$1,349.99
D2 Mach 2 51mm	October 22, 2025	$1,499.99
MARQ Aviator (Gen 2)	October 11, 2022	$1,950.00

Design, Hardware, and Overall Aesthetics

The overall look resembles a modern, circular smartwatch with a relatively minimalist design, its core hardware based on the newly updated Venu 4 (September 2025).

To the right are two buttons, intended to augment the excellent touchscreen rather than entirely replace it.  A novel highlight for Garmin at this price point is the built-in, two-colour LED flashlight (red and white), widely regarded as handy.

Garmin’s AMOLED display is beautifully vibrant and energy efficient, covered by a good-quality Gorilla Glass lens. Add the stainless steel case to that, and you have a solid, mid-range smart watch.

Listen to a chat based on this buyer’s guide

Aviation and Navigation Capabilities

D2-series Core Flight Tools from the older X10 are retained and improved. The classic features include Worldwide airport data, altimeter, 3-axis compass, multiple time zones, flight plan sync from Garmin Pilot, waypoint information page, global NAVAID and Intersection database, METAR (Meteorological Aerodrome Report), and TAF (Terminal Aerodrome Forecast)

The core omission that sets Air X15  apart from the Mach 2 is the omission of on-watch maps and the features that use those maps; also missing are perhaps more peripheral features, such as the Density Altitude Calculator.

Health, Wellness, and Fitness Features

D2 Air X15 supports a huge but incomplete range of Garmin’s extensive non-aviation features, from sleep quality to fitness training – golf, strength training and triathlon are all covered. However, newer features are omitted within each area, like the Triathlon coach, real-time stamina and custom golf targets – and diving is entirely omitted.

Of specific interest to pilots will be Garmin’s PulseOx (SpO2 – blood oxygen) monitoring, 24×7 ‘stress’ tracking with Body Battery and the Jet Lag Advisor. Even Garmin’s Morning Report can guide your readiness to take on whatever the journey throws at you today. Those are only a few examples of what is included.

Connectivity, Battery Life, and Convenience

The battery life is solid but far from market-leading. Whilst always-on display and GPS recording will give the battery life a serious hit, you will still get 20 hours of flight recording with GPS and SpO2. Contrast these performances to an Apple Watch 11, where the best possible battery life as a watch is 24 hours, and full-GPS recording modes are less than 10 hours.

• Smartwatch mode: Up to 10 days (4 days display always-on) – (D2 Mach 2 is 26 days)
• Fly Activity (GPS + SPO2): 20 hours (D2 Mach 2 is 58 hours)
• Battery Saver Smartwatch mode: Up to 25 days
• GPS-Only GNSS mode: Up to 20 hours
• All-Systems GNSS mode: Up to 19 hours
• All-Systems  GNSS mode with music: Up to 9 hours
• All-Systems GNSS mode + Multi-Band: Up to 17 hours
• All-Systems GNSS mode + Multi-Band with music: Up to 9 hours

The new audio quality speaker and microphone let you make and take calls from your wrist to your connected smartphone. These signals Garmin’s slow but steady move towards becoming a more competent smart watch to rival Apple, a new move away from its dominance as a sports watch. There are also on-watch, aviation-specific voice commands, like “Show me the METAR” and more general ones. However, the voice commands require a button press to start and are more restricted in scope than on, say, an Apple Watch.

Other smart features stand out, like support for Spotify and other streaming music services, which competitor sports watches tend to lack, contactless payments with Garmin Pay and 3rd party apps via Garmin’s Connect IQ store – many of which are pilot-specific (link).

Upgrade From D2 Air X10?

Although Air X15 is a super-solid, hardware bump from Air X10, there is only one new core avionics feature – Connext connectivity. All the other improvements boost the Air’s fitness, wellness and smart features, and use the latest hardware capabilities (e.g. microphone).

If you love your tech, the upgrade call is easy; if you love your plane and getting the most from it, then the call is harder to make, especially if you bought the X10 well after the initial launch 3 years ago. In plain terms, nothing is pushing you away from X10.

New Features of the D2 Air X15 (over X10)

• Built-in LED Flashlight – Red Shift Mode preserves night vision.
• Built-in Speaker and Microphone for calls to a connected smartphone.
• On-watch Voice Commands – “Show me the METAR”.
• D2 Air X15 is PlaneSync compatible – to view aircraft status information (fuel, electrical, database status, and location).
• Aviation Morning Report – Anticipated weather outlook and field conditions at a chosen airport
• Connext Connectivity.
• Dynamic METAR Watch Face –  change colour to match field conditions based on a chosen airport’s METAR (Meteorological Aerodrome Report).
• Geo-tagged Voice Memos
• Increased Battery Life (above)
• Larger AMOLED Display. 1.4″ (454  54px) –  Older D2 Air X10 is 1.3″ (416x416px).

You miss these compared to the more expensive D2 Mach 2

• Detailed Colour Mapping: includes topography and terrain shading.
• Colour-Coded Airspace: boundaries colour-coded by class
• Enhanced Runway Detail: at higher zoom levels,
• Personal Minimums tolerance Alerts: for flight conditions like max crosswind, minimum ceiling/visibility.
• Visual Alerting: colour-coded Weather elements triggered when personal METAR tolerances are exceeded
• Waypoint Detail: include personal waypoints, intersections, and VORs.

Connectivity and Reporting Enhancements

• PlaneSync Compatibility:
• Aviation Morning Report: includes anticipated weather conditions and field conditions at the chosen airport
• Evening Report: Helps prepare for the next day with a reminder of sleep need, tomorrow’s workout, weather, and events.
• Aviation Voice Commands: such as “Start Fly activity”
• Geo-referenced Voice Memos: in-flight

Take Out

If your plane is kitted out with Garmin avionics, a same-brand choice for your smartwatch is the obvious call. Garmin has the integrations that all the competition lacks. But which model? If you can afford to run a plane, you can certainly afford either of Garmin’s new D2 watch models. Perhaps your choice would be something as mundane as a preference for one case style or another?

Garmin’s Air X10 is a three-year-old model, and technology has moved on. Given the time that has passed along with inflation, I’m not too concerned about the $100 price rise to $649.99. In any case, Air X15 is clearly more capable than X10. Even though the price is slightly higher, the more capable hardware and updated generic software justify the bump.

Air X15 is a better watch than its predecessor, but I’ll find it hard to convince you it’s a better aviator’s watch than X10.

More Information

• Official Garmin Product page for D2 Air X15
• Official Garmin comparison tool
• Garmin D2 air X15 manual
• Buy Garmin Air X15

Last Updated on 30 January 2026 by the5krunner