Emisar D4V2 vs Streamlight MicroStream USB size comparison
The Streamlight MicroStream USB is 3 mm (0.12 in) longer than the Emisar D4V2, and 13 mm narrower at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
The Streamlight MicroStream USB is 3 mm (0.12 in) longer than the Emisar D4V2, and 13 mm narrower at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
Dimensions
| Emisar D4V2 Check price ↗ | Streamlight MicroStream USB Check price ↗ | |
| Length | 95 mm (3.74 in) | 98 mm (3.86 in)+3 mm |
| Head / width | 28 mm (1.10 in) | 15 mm (0.59 in)−13 mm |
| Body | 24 mm (0.94 in) | 15 mm (0.59 in)−9 mm |
| Weight | 58 g without battery | 34 g with battery |
| Battery | 18650 | Built-in |
| Max output | — | 250 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $35.68 at intl-outdoor.com, as of Nov 4, 2026 | $41.50 at batteryjunction.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Output depends on LED option | batteryjunction.com sourced |
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D4V2 vs MicroStream USB: how they differ
Size and weight
The Emisar D4V2 is the shorter light: 95 mm (3.74 in) against 98 mm (3.86 in), a difference of 3 mm (3%). At its widest point the Streamlight MicroStream USB is 13 mm slimmer (15 vs 28 mm). Weights are published on different bases (Emisar D4V2: 58 g without battery; Streamlight MicroStream USB: 34 g with battery), so they are not directly comparable.
Brightness and throw
The Streamlight MicroStream USB is rated at 250 lm; we have no published maximum for the Emisar D4V2. Output for the Emisar D4V2 depends on the LED option chosen.
Battery
The Emisar D4V2 runs on a removable 18650 battery; the Streamlight MicroStream USB runs on a built-in rechargeable battery. Only the Emisar D4V2 lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Emisar D4V2 was $35.68 at intl-outdoor.com and the Streamlight MicroStream USB $41.50 at batteryjunction.com, so the Emisar D4V2 cost $5.82 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 D4V2 if you want a shorter light (3 mm shorter) and a removable cell you can swap. Choose the Streamlight MicroStream USB if you want a slimmer profile (13 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 D4V2 Check price ↗ Streamlight MicroStream USB
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D4V2 vs MicroStream USB FAQ
Which is smaller, the Emisar D4V2 or the Streamlight MicroStream USB?
The Emisar D4V2 is the shorter light: 95 mm (3.74 in) against 98 mm (3.86 in), a difference of 3 mm (3%). At its widest point the Streamlight MicroStream USB is 13 mm slimmer (15 vs 28 mm). Weights are published on different bases (Emisar D4V2: 58 g without battery; Streamlight MicroStream USB: 34 g with battery), so they are not directly comparable.
Which is cheaper, the Emisar D4V2 or the Streamlight MicroStream USB?
When we checked on Nov 4, 2026, the Emisar D4V2 was $35.68 at intl-outdoor.com and the Streamlight MicroStream USB $41.50 at batteryjunction.com, so the Emisar D4V2 cost $5.82 less. Prices change often, so check the current price before you buy.
Do the Emisar D4V2 and Streamlight MicroStream USB use the same battery?
The Emisar D4V2 runs on a removable 18650 battery; the Streamlight MicroStream USB runs on a built-in rechargeable battery. Only the Emisar D4V2 lets you swap in a charged spare.
Compare Emisar D4V2 with similar lights
Compare Streamlight MicroStream USB with similar lights
More
Sources
- Emisar D4V2: specs from Emisar product page (manufacturer). Price $35.68 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- Streamlight MicroStream USB: specs from manufacturer published specs as listed by batteryjunction.com. Price $41.50 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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