Convoy S2+ vs Emisar D4K size comparison
The Emisar D4K is 15 mm (0.59 in) shorter than the Convoy S2+, and 3.9 mm wider at its widest point. It is 18 g lighter (without battery).
The Emisar D4K is 15 mm (0.59 in) shorter than the Convoy S2+, and 3.9 mm wider at its widest point. It is 18 g lighter (without battery).
Dimensions
| Convoy S2+ Check price ↗ | Emisar D4K Check price ↗ | |
| Length | 118 mm (4.65 in) | 103 mm (4.06 in)−15 mm |
| Head / width | 24.1 mm (0.95 in) | 28 mm (1.10 in)+3.9 mm |
| Body | 24.1 mm (0.95 in) | 26.5 mm (1.04 in)+2.4 mm |
| Weight | 76 g without battery | 58 g without battery−18 g |
| Battery | 18650 | 21700 |
| Max output | — | — |
| Throw | — | — |
| Type | EDC | EDC |
| Price | from $11.46 at convoylight.com, as of Nov 4, 2026 | $39.69 at intl-outdoor.com, as of Nov 4, 2026 |
| Source | convoylight.com sourced Output depends on LED option | intl-outdoor.com sourced Output depends on LED option |
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
S2+ vs D4K: how they differ
Size and weight
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 118 mm (4.65 in), a difference of 15 mm (13%). At its widest point the Convoy S2+ is 3.9 mm slimmer (24.1 vs 28 mm). The Emisar D4K is 18 g lighter (58 g vs 76 g, without battery).
Brightness and throw
Output for the Convoy S2+ and Emisar D4K depends on the LED option chosen.
Battery
The Convoy S2+ runs on a removable 18650 battery; the Emisar D4K runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Price
When we checked on Nov 4, 2026, the Convoy S2+ was from $11.46 at convoylight.com and the Emisar D4K $39.69 at intl-outdoor.com, so the Convoy S2+ cost $28.23 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 Convoy S2+ if you want a slimmer profile (3.9 mm narrower). Choose the Emisar D4K if you want a shorter light (15 mm shorter) and less weight (18 g lighter). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Convoy S2+ Check price ↗ Emisar D4K
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
S2+ vs D4K FAQ
Which is smaller, the Convoy S2+ or the Emisar D4K?
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 118 mm (4.65 in), a difference of 15 mm (13%). At its widest point the Convoy S2+ is 3.9 mm slimmer (24.1 vs 28 mm). The Emisar D4K is 18 g lighter (58 g vs 76 g, without battery).
Which is cheaper, the Convoy S2+ or the Emisar D4K?
When we checked on Nov 4, 2026, the Convoy S2+ was from $11.46 at convoylight.com and the Emisar D4K $39.69 at intl-outdoor.com, so the Convoy S2+ cost $28.23 less. Prices change often, so check the current price before you buy.
Do the Convoy S2+ and Emisar D4K use the same battery?
The Convoy S2+ runs on a removable 18650 battery; the Emisar D4K runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Compare Convoy S2+ with similar lights
Compare Emisar D4K with similar lights
More
Sources
- Convoy S2+: specs from manufacturer published specs as listed by convoylight.com. Drawing: outline from published specs. Price from $11.46 from convoylight.com, checked Nov 4, 2026; prices change often.
- Emisar D4K: specs from Emisar product page (manufacturer). Drawing: outline from published specs. Price $39.69 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
Found an error? Email [email protected] and we will fix it.