Sofirn · Sofirn IF25A
IF25A 4000K (4x SST20 95 CRI)
4000K neutral white version with 95 CRI SST20 LEDs. Significantly better tint than 6500K version which has greenish cast.
At a glance
Key specifications
How it works
Controls & interface
2CDirect high / turbo1HDirect floor / moonlight3CBattery check4CElectronic lockout3HStrobe / mood modesPerformance behavior
Output & regulation
- 30-second output
- 3050 lm
- 5-minute sustained
- 750 lm
- Driver
- Buck
- Regulated levels
- Yes
- Thermal control
- Temperature feedback
- PWM
- Not detected / listed
No PWM detected, fully current-controlled driver
Why this matters: Buck and boost drivers step down or step up voltage efficiently using switching inductors, maintaining flat regulated output as cell voltage drains rather than dimming progressively like FET/linear direct drives.
Deep specs
Technical details
Structured fields used by the database and comparison tools.
Beam & emitter
- Optic
- TIR
- Head diameter
- 35 mm
- Emitter
- Luminus SST-20 ×4
- CCT
- 4000K
- CRI
- 95
4000K neutral white version with 95 CRI SST20 LEDs. Significantly better tint than 6500K version which has greenish cast.
Battery & charging
- Cell
- 21700
- Battery included
- Yes
- Proprietary cell
- No
- Onboard charging
- USB-C
- USB-C to C
- Yes
- Powerbank
- No
- Low-voltage protection
- Yes
Size & construction
- Length
- 106.4000015258789 mm
- Head diameter
- 35 mm
- Weight
- 163 g
- Body
- aluminum
- Finish
- Type III hard anodized
- IP rating
- IPX8
- Impact rating
- 1 m
Carry & enthusiast features
Manufacturer / source data
Runtime claims
| Mode | Output | Runtime | Regulation |
|---|---|---|---|
| Turbo | 3800 lm | 2:40 | Unregulated |
| High | 1650 lm | 2:40 | Unregulated |
| Medium | 450 lm | 8:00 | Regulated |
Quick thermal stepdown from 3800lm to ~750lm sustainable output. On turbo pulls over 6A and thermal throttling activates at 55°C default. Measured runtime: 2h40m to LVP (3.04V). Turbo stays above 2000lm for 2 minutes, drops to 1000lm after another 3 minutes. Output fluctuates 400-600lm in sustained mode. Thermal config is adjustable via Anduril. Measured output at 30s: 3050lm. Intelligent temperature control prevents overheating. Includes 4000mAh Sofirn battery (tested at 4330mAh actual capacity).
Price & availability
Where to buy
Typical price: €35
Trace the data
Sources & technical references
Use the original sources for context, revision details and methodology.