Sofirn SC33 vs Emisar D4K
Quick take: The Sofirn SC33 is brighter (5,200 vs 3,500 lm); the Sofirn SC33 throws farther (297m vs 173m).
| Spec | Sofirn SC33 | Emisar D4K |
|---|---|---|
| Price | $40 | $40 |
| Rating | — | — |
| Type | EDC | EDC |
| Lumens | 5,200 lm | 3,500 lm |
| Candela | 22,000 cd | 7,500 cd |
| Beam distance | 297m | 173m |
| Runtime | 1.5 hrs (high) | 1.5 hrs (turbo) |
| Battery | 21700 | 21700 |
| LED | XHP70.3 HI | Nichia 519A 4500K |
| Beam type | Balanced | Flood |
| Modes | Ramping + Stepped | Ramping + Stepped |
| UI | Sofirn stepped/stepless UI | Anduril 2 |
| IP rating | IPX8 | IP67 |
| CRI | 70 | 95 |
| Weight | 3.6 oz | 3.5 oz |
| Dimensions | 5.0 x 1.1 in | 4.3 x 1.2 in |
| Warranty | 1 Year | Manufacturer Limited |
What owners report
Sofirn SC33
- ✓XHP70.3 HI is efficient — high output without gutting runtime
- ✓5,200 lumens with real throw rather than pure flood
- ✓No PWM on any mode, so no flicker
- ✓Tail-mounted USB-C charging, full in about three hours
- ✓Eco mode runs for hundreds of hours
- ✗Big for its class — not comfortably pocketable
- ✗Beam shows some ringing, and the crenellated bezel gives a pentagonal spill
- ✗Cool colour temperature and low CRI
- ✗Turbo is limited to roughly 1.5 hours
- ✗Weight follows from the 21700 and the head size
Emisar D4K
- ✓Configure everything: materials, emitters, driver, switch and accessories
- ✓Optional boost driver gives higher and better-regulated output
- ✓Auxiliary LEDs that owners single out for how good they look
- ✓Geometry works well for hands-free and helmet-mounted use
- ✓Light enough to wear on a helmet for hours
- ✗No USB-C charging and no reverse charging — the cell comes out
- ✗Rated 3,800 lumens with a real-world ceiling nearer 2,000
- ✗Not the right light for hours of sustained high output
- ✗Specifying a configuration is daunting if you don't know what you want
- ✗Ordering goes through a small-batch supplier with long lead times