Amazfit Active 2 vs Garmin Instinct 3 45mm Solar Tactical Edition
Size, specs & wrist fit compared
Which one fits you
Under 16 cm (6.3 in) round, the Garmin Instinct 3 45mm Solar Tactical Edition's lugs overhang and the Amazfit Active 2's do not; the Amazfit Active 2 fills the wrist at 16.5–18.5 cm, the Garmin Instinct 3 45mm Solar Tactical Edition at 17–19 cm.
What else differs
- Screen: the Amazfit Active 2 uses a bright AMOLED screen, the Garmin Instinct 3 45mm Solar Tactical Edition a memory-in-pixel screen that is easy to read in sunlight and sips battery.
- Battery: 28 days for the Garmin Instinct 3 45mm Solar Tactical Edition against 10 days for the Amazfit Active 2 in everyday use; 40 hours for the Garmin Instinct 3 45mm Solar Tactical Edition against 21 hours for the Amazfit Active 2 with GPS on.
- Only the Amazfit Active 2 has a sapphire lens; only the Garmin Instinct 3 45mm Solar Tactical Edition has solar charging.
5mm thinner, the Amazfit Active 2 is the one that slides under a shirt cuff.
Among the 22 smartwatches 44mm across that we hold thickness for, the Amazfit Active 2 is thinner than 86%, so it wears flatter than its width suggests.
The Garmin Instinct 3 45mm Solar Tactical Edition is 1.1mm wider, 5mm thicker and 22.5g heavier than the Amazfit Active 2.
Amazfit
Active 2
Garmin
Instinct 3 45mm Solar Tactical Edition
Amazfit Active 2 or Garmin Instinct 3 45mm Solar Tactical Edition by wrist size
| Wrist round (mm left each side) | Amazfit Active 2≈50.5mm lug to lug, est. | Garmin Instinct 3 45mm Solar Tactical Edition≈51.5mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (2.7mm over) | Overhangs (3.2mm over) |
| 15 cm / 5.9 in | Overhangs (1.1mm over) | Overhangs (1.6mm over) |
| 16 cm / 6.3 in | Bold (0.6mm) | Bold (0.1mm) |
| 17 cm / 6.7 in | Sweet spot (2.2mm) | Sweet spot (1.7mm) |
| 18 cm / 7.1 in | Sweet spot (3.8mm) | Sweet spot (3.3mm) |
| 19 cm / 7.5 in | Balanced (5.4mm) | Balanced (4.9mm) |
| 20 cm / 7.9 in | Balanced (7mm) | Balanced (6.5mm) |
Switch or add watches
Amazfit
Active 2
Garmin
Instinct 3 45mm Solar Tactical Edition
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Battery life compared
Furthest apart in Battery saver mode, where the Garmin Instinct 3 45mm Solar Tactical Edition lasts 3.4× as long as the Amazfit Active 2 (65 days against 19 days).
Amazfit Active 2Garmin Instinct 3 45mm Solar Tactical Edition
Battery saver
19 days65 daysExpedition
—36 daysSmartwatch
10 days28 daysMax battery GPS
—100 hoursGPS only
21 hours40 hours +130 hoursAll systems
—28 hours +50 hoursAll systems + multi-band
—24 hours +40 hours
Amber figures are the solar-assisted runtime the manufacturer publishes for that mode.
More comparisons
2D Dimension Schematics
- Amazfit Active 2 43.9mm × ≈50.5mm (est.) · 9.9mm thick
- Garmin Instinct 3 45mm Solar Tactical Edition 45mm × ≈51.5mm (est.) · 14.9mm thick
3D preview
Amazfit Active 2 vs Garmin Instinct 3 45mm Solar Tactical Edition on a wrist
Specifications
The short version
6 key specs| Spec | AmazfitActive 2 | GarminInstinct 3 45mm Solar Tactical Edition |
|---|---|---|
| Case Width | 43.9mm | 45mm |
| Thickness | 9.9mm | 14.9mm |
| Weight | 29.5g | 52g |
| Shape | Circular | Circular |
| Display type | OLED/AMOLED | Monochrome, sunlight-visible, transflective memory-in-pixel (MIP) |
| Released | 2025 | 2025 |