Emisar D3AA vs Emisar D4K size comparison
The Emisar D4K is 24 mm (0.94 in) longer than the Emisar D3AA, and 4 mm wider at its widest point. It is 22 g heavier (without battery).
The Emisar D4K is 24 mm (0.94 in) longer than the Emisar D3AA, and 4 mm wider at its widest point. It is 22 g heavier (without battery).
Dimensions
| Emisar D3AA Check price ↗ | Emisar D4K Check price ↗ | |
| Length | 79 mm (3.11 in) | 103 mm (4.06 in)+24 mm |
| Head / width | 24 mm (0.94 in) | 28 mm (1.10 in)+4 mm |
| Body | 19 mm (0.75 in) | 26.5 mm (1.04 in)+7.5 mm |
| Weight | 36 g without battery | 58 g without battery+22 g |
| Battery | 14500 / AA | 21700 |
| Max output | — | — |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $35.81 at intl-outdoor.com, as of Nov 4, 2026 | $39.69 at intl-outdoor.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Output depends on LED option | intl-outdoor.com sourced Output depends on LED option |
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D3AA vs D4K: how they differ
Size and weight
The Emisar D3AA is the shorter light: 79 mm (3.11 in) against 103 mm (4.06 in), a difference of 24 mm (23%). At its widest point the Emisar D3AA is 4 mm slimmer (24 vs 28 mm). The Emisar D3AA is 22 g lighter (36 g vs 58 g, without battery).
Brightness and throw
Output for the Emisar D3AA and Emisar D4K depends on the LED option chosen.
Battery
The Emisar D3AA runs on removable 14500 / AA batteries; the Emisar D4K runs on a removable 21700 battery. For scale, a 14500 cell is about 14 × 50 mm and a 21700 about 21 × 70 mm (nominal).
Price
When we checked on Nov 4, 2026, the Emisar D3AA was $35.81 at intl-outdoor.com and the Emisar D4K $39.69 at intl-outdoor.com, so the Emisar D3AA cost $3.88 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the Emisar D3AA if you want a shorter light (24 mm shorter), a slimmer profile (4 mm narrower) and less weight (22 g lighter). On the specs we track, the Emisar D3AA is ahead or level everywhere; the Emisar D4K makes sense mainly if its price, interface or a feature we don't track suits you better. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Emisar D3AA Check price ↗ Emisar D4K
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D3AA vs D4K FAQ
Which is smaller, the Emisar D3AA or the Emisar D4K?
The Emisar D3AA is the shorter light: 79 mm (3.11 in) against 103 mm (4.06 in), a difference of 24 mm (23%). At its widest point the Emisar D3AA is 4 mm slimmer (24 vs 28 mm). The Emisar D3AA is 22 g lighter (36 g vs 58 g, without battery).
Which is cheaper, the Emisar D3AA or the Emisar D4K?
When we checked on Nov 4, 2026, the Emisar D3AA was $35.81 at intl-outdoor.com and the Emisar D4K $39.69 at intl-outdoor.com, so the Emisar D3AA cost $3.88 less. Prices change often, so check the current price before you buy.
Do the Emisar D3AA and Emisar D4K use the same battery?
The Emisar D3AA runs on removable 14500 / AA batteries; the Emisar D4K runs on a removable 21700 battery. For scale, a 14500 cell is about 14 × 50 mm and a 21700 about 21 × 70 mm (nominal).
Compare Emisar D3AA with similar lights
Compare Emisar D4K 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.
- Emisar D4K: specs from Emisar product page (manufacturer). Price $39.69 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
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