Emisar D4K vs ThruNite T1 Pro size comparison
The ThruNite T1 Pro is about the same length as the Emisar D4K, and 1 mm narrower at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The ThruNite T1 Pro is about the same length as the Emisar D4K, and 1 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 ↗ | ThruNite T1 Pro Check price ↗ | |
| Length | 103 mm (4.06 in) | 103 mm (4.06 in)same |
| Head / width | 28 mm (1.10 in) | 27 mm (1.06 in)−1 mm |
| Body | 26.5 mm (1.04 in) | 23 mm (0.91 in)−3.5 mm |
| Weight | 58 g without battery | 54 g listed |
| Battery | 21700 | 18650 |
| Max output | — | 1,920 lm |
| Throw | — | 196 m |
| Type | EDC | EDC |
| Price | $39.69 at intl-outdoor.com, as of Nov 4, 2026 | not verified yet |
| Source | intl-outdoor.com sourced Output depends on LED option | batteryjunction.com sourced |
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D4K vs T1 Pro: how they differ
Size and weight
The Emisar D4K and ThruNite T1 Pro are the same length to within half a millimetre (103 mm (4.06 in)). At its widest point the ThruNite T1 Pro is 1 mm slimmer (27 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; ThruNite T1 Pro: 54 g listed), so they are not directly comparable.
Brightness and throw
The ThruNite T1 Pro is rated at 1,920 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 ThruNite T1 Pro runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
On the specs we track, these two are closely matched, so decide on price, user interface and the features you care about. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Emisar D4K Check price ↗ ThruNite T1 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D4K vs T1 Pro FAQ
Which is smaller, the Emisar D4K or the ThruNite T1 Pro?
The Emisar D4K and ThruNite T1 Pro are the same length to within half a millimetre (103 mm (4.06 in)). At its widest point the ThruNite T1 Pro is 1 mm slimmer (27 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; ThruNite T1 Pro: 54 g listed), so they are not directly comparable.
Do the Emisar D4K and ThruNite T1 Pro use the same battery?
The Emisar D4K runs on a removable 21700 battery; the ThruNite T1 Pro runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Compare Emisar D4K with similar lights
Compare ThruNite T1 Pro 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.
- ThruNite T1 Pro: specs from manufacturer published specs as listed by batteryjunction.com. No verified price yet.
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