Garmin Instinct 3 Solar vs Polar Vantage V3

Both have (3)

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

Only Garmin Instinct 3 Solar (0)

Nothing unique.

Only Polar Vantage V3 (3)

• ECG
• AMOLED display
• offline maps

Pick the Garmin Instinct 3 Solar if…

• You want to spend less: it lists for $150 less.
• You want fewer charges: about 24 days per charge vs 8 days.
• Your main use is outdoor adventure: it is listed for that and the Polar Vantage V3 is not.
• You might switch phones: it works with both iPhone and Android, the Polar Vantage V3 only works with Android.
• You want the newer model (2025 vs 2023).

Skip it if…

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

Pick the Polar Vantage V3 if…

• You want a lighter watch: 57 g vs 58 g.
• You need ECG, AMOLED display and offline maps, which the Garmin Instinct 3 Solar does not list.
• Your main use is running and health tracking: it is listed for that and the Garmin Instinct 3 Solar is not.
• 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 47 mm case we list is large (check whether a smaller size is sold).