Amazfit T-Rex 3 Pro vs Garmin Instinct 3 Solar

Both have (3)

• built-in GPS
• blood-oxygen (SpO₂)
• swim tracking

Only Amazfit T-Rex 3 Pro (3)

• on-device music
• AMOLED display
• offline maps

Only Garmin Instinct 3 Solar (0)

Nothing unique.

Pick the Amazfit T-Rex 3 Pro if…

• You want to spend less: it lists for $70 less.
• You want fewer charges: about 25 days per charge vs 24 days.
• You need on-device music, AMOLED display and offline maps, which the Garmin Instinct 3 Solar does not list.
• You might switch phones: it works with both iPhone and Android, the Garmin Instinct 3 Solar only works with Android.
• You want a bright AMOLED screen.

Skip it if…

• • You have a small wrist (under about 160 mm) — the 48 mm case we list is large (check whether a smaller size is sold).
• • You want something light enough to sleep in — it weighs 70 g.

Pick the Garmin Instinct 3 Solar if…

• You want a lighter watch: 58 g vs 70 g.
• You might switch phones: it works with both iPhone and Android, the Amazfit T-Rex 3 Pro only works with Android.
• You want a display that stays readable in direct sun and sips power.

Skip it if…

• • You want a bright, vivid AMOLED screen — this one uses a lower-power display.