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COROS APEX 4 (46 mm) vs Garmin Instinct 3 AMOLED (45 mm)
The specs that matter for triathlon, side by side, from each maker’s own published figures.
| Spec | COROS APEX 4 (46 mm) | Garmin Instinct 3 AMOLED (45 mm) |
|---|---|---|
| GPS battery | 53 h | 32 h |
| Smartwatch battery | 24 days | 18 days |
| Triathlon / multisport mode | Yes | Yes |
| Onboard maps | Yes | No |
| Open-water GPS (our rating) | 5 / 5 | 5 / 5 |
| Weight | 64 g | 53 g |
| Screen | MIP | AMOLED |
| Price | See retailer | ~$349.99 |
Open-water GPS is our 1–5 rating from the satellite systems each maker lists: multi-band receivers score 5. Everything else is the maker’s own figure.
Which should you pick?
COROS
Pick the APEX 4 (46 mm) if…
- you want the longer GPS battery: 53 h vs 32 h
- you want the longer smartwatch battery: 24 days vs 18 days
- you want onboard maps
Specs from the makers’ own pages: COROS, Garmin.
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