Emisar D1K vs RovyVon E300S G2 size comparison
The RovyVon E300S G2 is 13 mm (0.51 in) shorter than the Emisar D1K, and 2 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The RovyVon E300S G2 is 13 mm (0.51 in) shorter than the Emisar D1K, and 2 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Emisar D1K Check price ↗ | RovyVon E300S G2 Check price ↗ | |
| Length | 114 mm (4.49 in) | 101 mm (3.98 in)−13 mm |
| Head / width | 35 mm (1.38 in) | 37 mm (1.46 in)+2 mm |
| Body | 26.5 mm (1.04 in) | — |
| Thickness | — | 17 mm (0.67 in) |
| Weight | 89 g without battery | 90 g listed |
| Battery | 21700 | Built-in |
| Max output | 1,200 lm | 2,400 lm |
| Throw | — | 130 m |
| Type | EDC | EDC |
| Price | $39.95 at intl-outdoor.com, as of Nov 4, 2026 | $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Pocket thrower; lumens for SFT-25 | batteryjunction.com sourced |
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D1K vs E300S G2: how they differ
Size and weight
The RovyVon E300S G2 is the shorter light: 101 mm (3.98 in) against 114 mm (4.49 in), a difference of 13 mm (11%). At its widest point the Emisar D1K is 2 mm slimmer (35 vs 37 mm). Weights are published on different bases (Emisar D1K: 89 g without battery; RovyVon E300S G2: 90 g listed), so they are not directly comparable.
Brightness and throw
The RovyVon E300S G2 is rated brighter: 2,400 lm maximum vs 1,200 lm for the Emisar D1K, 100% more.
Battery
The Emisar D1K runs on a removable 21700 battery; the RovyVon E300S G2 runs on a built-in rechargeable battery. Only the Emisar D1K lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Emisar D1K was $39.95 at intl-outdoor.com and the RovyVon E300S G2 $79.95 at batteryjunction.com, so the Emisar D1K cost $40.00 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 D1K if you want a slimmer profile (2 mm narrower) and a removable cell you can swap. Choose the RovyVon E300S G2 if you want a shorter light (13 mm shorter), more output (2,400 lm vs 1,200 lm) 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 D1K Check price ↗ RovyVon E300S G2
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D1K vs E300S G2 FAQ
Which is smaller, the Emisar D1K or the RovyVon E300S G2?
The RovyVon E300S G2 is the shorter light: 101 mm (3.98 in) against 114 mm (4.49 in), a difference of 13 mm (11%). At its widest point the Emisar D1K is 2 mm slimmer (35 vs 37 mm). Weights are published on different bases (Emisar D1K: 89 g without battery; RovyVon E300S G2: 90 g listed), so they are not directly comparable.
Which is brighter, the Emisar D1K or the RovyVon E300S G2?
The RovyVon E300S G2 is rated brighter: 2,400 lm maximum vs 1,200 lm for the Emisar D1K, 100% more.
Which is cheaper, the Emisar D1K or the RovyVon E300S G2?
When we checked on Nov 4, 2026, the Emisar D1K was $39.95 at intl-outdoor.com and the RovyVon E300S G2 $79.95 at batteryjunction.com, so the Emisar D1K cost $40.00 less. Prices change often, so check the current price before you buy.
Do the Emisar D1K and RovyVon E300S G2 use the same battery?
The Emisar D1K runs on a removable 21700 battery; the RovyVon E300S G2 runs on a built-in rechargeable battery. Only the Emisar D1K lets you swap in a charged spare.
Compare Emisar D1K with similar lights
Compare RovyVon E300S G2 with similar lights
More
Sources
- Emisar D1K: specs from Emisar product page (manufacturer). Price $39.95 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- RovyVon E300S G2: specs from manufacturer published specs as listed by batteryjunction.com. Price $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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