Hands On: Garmin D2 Mach 1 Aviation Watch
Garmin's latest aviation watch, the D2 Mach 1, adds a lot of new features and looks great too.
Garmin D2 Mach 1 aviation watch
Garmin's latest aviation watch, the D2 Mach 1, adds a lot of new features into a heavy duty case. (Photo: Garmin)

Whenever I get to spend some time with a dedicated Garmin aviation watch, like the latest D2 Mach 1 that I’ve been wearing for the last few months, I’m grateful for its long battery life. Compared to the Apple Watch that I normally use, the Garmin watches last far longer between charging, sometimes up to a week at a time when shut off at night. Most of the time, I have to charge the Apple Watch every night.

The battery life of the D2 Mach 1 is up to 11 days in smartwatch mode, 21 days in battery-saver mode, and up to 24 hours in fly mode while using GPS and the oxygen saturation monitor.