Emisar D3AA vs Fenix APEX 20 size comparison
The Fenix APEX 20 is 8.6 mm (0.34 in) shorter than the Emisar D3AA, and 4.5 mm wider at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
The Fenix APEX 20 is 8.6 mm (0.34 in) shorter than the Emisar D3AA, and 4.5 mm wider at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
Dimensions
| Emisar D3AA Check price ↗ | Fenix APEX 20 Check price ↗ | |
| Length | 79 mm (3.11 in) | 70.4 mm (2.77 in)−8.6 mm |
| Head / width | 24 mm (0.94 in) | 28.5 mm (1.12 in)+4.5 mm |
| Body | 19 mm (0.75 in) | — |
| Thickness | — | 13.7 mm (0.54 in) |
| Weight | 36 g without battery | 61 g with battery |
| Battery | 14500 / AA | Built-in |
| Max output | — | 760 lm |
| Throw | — | 86 m |
| Type | EDC | EDC limited edition |
| Price | $35.81 at intl-outdoor.com, as of Nov 4, 2026 | $89.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Output depends on LED option | fenixlighting.com sourced Listed 28.5 mm wide x 13.7 mm thick; Limited edition |
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D3AA vs APEX 20: how they differ
Size and weight
The Fenix APEX 20 is the shorter light: 70.4 mm (2.77 in) against 79 mm (3.11 in), a difference of 8.6 mm (11%). At its widest point the Emisar D3AA is 4.5 mm slimmer (24 vs 28.5 mm). Weights are published on different bases (Emisar D3AA: 36 g without battery; Fenix APEX 20: 61 g with battery), so they are not directly comparable.
Brightness and throw
The Fenix APEX 20 is rated at 760 lm; we have no published maximum for the Emisar D3AA. Output for the Emisar D3AA depends on the LED option chosen.
Battery
The Emisar D3AA runs on removable 14500 / AA batteries; the Fenix APEX 20 runs on a built-in rechargeable battery. Only the Emisar D3AA lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Emisar D3AA was $35.81 at intl-outdoor.com and the Fenix APEX 20 $89.95 at fenixlighting.com, so the Emisar D3AA cost $54.14 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Emisar D3AA if you want a slimmer profile (4.5 mm narrower) and a removable cell you can swap. Choose the Fenix APEX 20 if you want a shorter light (8.6 mm shorter) and a built-in battery with no separate cell to buy. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Emisar D3AA Check price ↗ Fenix APEX 20
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D3AA vs APEX 20 FAQ
Which is smaller, the Emisar D3AA or the Fenix APEX 20?
The Fenix APEX 20 is the shorter light: 70.4 mm (2.77 in) against 79 mm (3.11 in), a difference of 8.6 mm (11%). At its widest point the Emisar D3AA is 4.5 mm slimmer (24 vs 28.5 mm). Weights are published on different bases (Emisar D3AA: 36 g without battery; Fenix APEX 20: 61 g with battery), so they are not directly comparable.
Which is cheaper, the Emisar D3AA or the Fenix APEX 20?
When we checked on Nov 4, 2026, the Emisar D3AA was $35.81 at intl-outdoor.com and the Fenix APEX 20 $89.95 at fenixlighting.com, so the Emisar D3AA cost $54.14 less. Prices change often, so check the current price before you buy.
Do the Emisar D3AA and Fenix APEX 20 use the same battery?
The Emisar D3AA runs on removable 14500 / AA batteries; the Fenix APEX 20 runs on a built-in rechargeable battery. Only the Emisar D3AA lets you swap in a charged spare.
Compare Emisar D3AA with similar lights
Compare Fenix APEX 20 with similar lights
More
Sources
- Emisar D3AA: specs from Emisar product page (manufacturer). Price $35.81 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- Fenix APEX 20: specs from Fenix product page (manufacturer). Price $89.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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