Amazfit Active 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's do not; the Amazfit Active fills the wrist at 13–13 cm, the Garmin Instinct 3 45mm Solar Tactical Edition at 17–19 cm.
What else differs
- Screen: the Amazfit Active 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 14 days for the Amazfit Active in everyday use; 40 hours for the Garmin Instinct 3 45mm Solar Tactical Edition against 16 hours for the Amazfit Active with GPS on.
- Only the Garmin Instinct 3 45mm Solar Tactical Edition has solar charging and contactless payments (NFC).
4.2mm thinner, the Amazfit Active is the one that slides under a shirt cuff.
The Garmin Instinct 3 45mm Solar Tactical Edition is 2.6mm wider, 4.2mm thicker and 25g heavier than the Amazfit Active.
Amazfit
Active
Garmin
Instinct 3 45mm Solar Tactical Edition
Amazfit Active or Garmin Instinct 3 45mm Solar Tactical Edition by wrist size
| Wrist round (mm left each side) | Amazfit Active | Garmin Instinct 3 45mm Solar Tactical Edition≈51.5mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Balanced (4.6mm) | Overhangs (3.2mm over) |
| 15 cm / 5.9 in | Balanced (6.2mm) | Overhangs (1.6mm over) |
| 16 cm / 6.3 in | Understated (7.9mm) | Bold (0.1mm) |
| 17 cm / 6.7 in | Understated (9.5mm) | Sweet spot (1.7mm) |
| 18 cm / 7.1 in | Understated (11.1mm) | Sweet spot (3.3mm) |
| 19 cm / 7.5 in | Understated (12.7mm) | Balanced (4.9mm) |
| 20 cm / 7.9 in | Understated (14.3mm) | Balanced (6.5mm) |
Switch or add watches
Amazfit
Active
Garmin
Instinct 3 45mm Solar Tactical Edition
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Battery life compared
Amazfit ActiveGarmin Instinct 3 45mm Solar Tactical Edition
Battery saver
30 days65 daysExpedition
—36 daysSmartwatch
14 days28 daysHeavy use
10 days—Max battery GPS
—100 hoursGPS only
16 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 42.4mm × 35.9mm · 10.8mm thick
- Garmin Instinct 3 45mm Solar Tactical Edition 45mm × ≈51.5mm (est.) · 14.9mm thick
3D preview
Amazfit Active vs Garmin Instinct 3 45mm Solar Tactical Edition on a wrist
Specifications
The short version
7 key specs| Spec | AmazfitActive | GarminInstinct 3 45mm Solar Tactical Edition |
|---|---|---|
| Case Width | 42.36mm | 45mm |
| Lug-to-Lug | 35.9mm | 45mm |
| Thickness | 10.75mm | 14.9mm |
| Weight | 27g | 52g |
| Shape | Rectangle | Circular |
| Display type | OLED/AMOLED | Monochrome, sunlight-visible, transflective memory-in-pixel (MIP) |
| Released | 2023 | 2025 |