Garmin
Comparisons Garmin Instinct 3 45mm AMOLED
Garmin Instinct 3 AMOLED or Amazfit T-Rex 3 Pro 44mm
Garmin Instinct 3 AMOLED 45 mm vs Amazfit T-Rex 3 Pro 44 mm: NFC and 4 GB vs titanium, L1 + L5 and SpO2. The Amazfit is cheaper.
Garmin Instinct 3 Solar or AMOLED 45 mm: sun or brightness
Garmin Instinct 3 45 mm Solar vs AMOLED: MIP and up to 28 days vs AMOLED 390×390, 4 GB and up to 18 days. The price gap is small.
Garmin Instinct 3 AMOLED 45 or 50 mm
Garmin Instinct 3 AMOLED 45 mm vs 50 mm: 1.2" vs 1.3", up to 18 vs up to 24 days, 53 vs 59 g. The 50 mm costs a bit more.