Emisar D4K vs Streamlight MacroStream USB size comparison
The Streamlight MacroStream USB is 11 mm (0.43 in) longer than the Emisar D4K, and 7 mm narrower at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The Streamlight MacroStream USB is 11 mm (0.43 in) longer than the Emisar D4K, and 7 mm narrower at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Emisar D4K Check price ↗ | Streamlight MacroStream USB Check price ↗ | |
| Length | 103 mm (4.06 in) | 114 mm (4.49 in)+11 mm |
| Head / width | 28 mm (1.10 in) | 21 mm (0.83 in)−7 mm |
| Body | 26.5 mm (1.04 in) | 21 mm (0.83 in)−5.5 mm |
| Weight | 58 g without battery | 62 g listed |
| Battery | 21700 | Built-in |
| Max output | — | 500 lm |
| Throw | — | 90 m |
| Type | EDC | EDC |
| Price | $39.69 at intl-outdoor.com, as of Nov 4, 2026 | $71.20 at batteryjunction.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Output depends on LED option | batteryjunction.com sourced Only body diameter listed |
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D4K vs MacroStream USB: how they differ
Size and weight
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 114 mm (4.49 in), a difference of 11 mm (10%). At its widest point the Streamlight MacroStream USB is 7 mm slimmer (21 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; Streamlight MacroStream USB: 62 g listed), so they are not directly comparable.
Brightness and throw
The Streamlight MacroStream USB is rated at 500 lm; we have no published maximum for the Emisar D4K. Output for the Emisar D4K depends on the LED option chosen.
Battery
The Emisar D4K runs on a removable 21700 battery; the Streamlight MacroStream USB runs on a built-in rechargeable battery. Only the Emisar D4K lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Emisar D4K was $39.69 at intl-outdoor.com and the Streamlight MacroStream USB $71.20 at batteryjunction.com, so the Emisar D4K cost $31.51 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 D4K if you want a shorter light (11 mm shorter) and a removable cell you can swap. Choose the Streamlight MacroStream USB if you want a slimmer profile (7 mm narrower) 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 D4K Check price ↗ Streamlight MacroStream USB
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D4K vs MacroStream USB FAQ
Which is smaller, the Emisar D4K or the Streamlight MacroStream USB?
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 114 mm (4.49 in), a difference of 11 mm (10%). At its widest point the Streamlight MacroStream USB is 7 mm slimmer (21 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; Streamlight MacroStream USB: 62 g listed), so they are not directly comparable.
Which is cheaper, the Emisar D4K or the Streamlight MacroStream USB?
When we checked on Nov 4, 2026, the Emisar D4K was $39.69 at intl-outdoor.com and the Streamlight MacroStream USB $71.20 at batteryjunction.com, so the Emisar D4K cost $31.51 less. Prices change often, so check the current price before you buy.
Do the Emisar D4K and Streamlight MacroStream USB use the same battery?
The Emisar D4K runs on a removable 21700 battery; the Streamlight MacroStream USB runs on a built-in rechargeable battery. Only the Emisar D4K lets you swap in a charged spare.
Compare Emisar D4K with similar lights
Compare Streamlight MacroStream USB with similar lights
More
Sources
- Emisar D4K: specs from Emisar product page (manufacturer). Price $39.69 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- Streamlight MacroStream USB: specs from manufacturer published specs as listed by batteryjunction.com. Price $71.20 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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