Garmin Forerunner 265 vs Garmin D2 Mach 2 — Which One Should You Buy?

Here's a side-by-side look at the Garmin Forerunner 265 versus the Garmin D2 Mach 2. For ATM rating, the Garmin Forerunner 265 shows 5 atm against the Garmin D2 Mach 2's 10 atm. Looking at band width, the Garmin Forerunner 265 offers 22 mm compared to 26 mm on the Garmin D2 Mach 2. Garmin Forerunner 265's display type is oled amoled, versus oled amoled on the Garmin D2 Mach 2. The Garmin Forerunner 265 has a 1.3-inch OLED AMOLED display with 416 x 416 px resolution, while the Garmin D2 Mach 2 has a 1.4-inch OLED AMOLED display with 454 x 454 px resolution. The Forerunner 265 offers 452 ppi pixel density, weighs 47 g, and is 12.9 mm thick, whereas the D2 Mach 2 offers 458 ppi, weighs 92 g, and is 14.7 mm thick. The Forerunner 265 is water resistant with a 5 ATM rating, while the D2 Mach 2 is waterproof with a 10 ATM rating. The Forerunner 265 provides 13 days of battery life and 20 hours with GPS on, compared with 26 days and 84 hours with GPS on for the D2 Mach 2. The Forerunner 265 has 8GB of internal storage and a 22 mm band width, while the D2 Mach 2 has 32GB of internal storage and a 26 mm band width. Timestamps: Design - 0:00:05 Sensors - 0:03:01 Activity tracking - 0:04:26 Connectivity - 0:06:43 Battery - 0:07:37 Features - 0:08:19 App & Software - 0:10:45