Convoy · Convoy L21B
L21B with Luminus SFT40 (5000K or 6500K), 60mm SMO reflector, ~2000 lumens, 395,000cd. Biscotti UI, 8A buck driver, 1000+ meter throw.
SFT40 available in 5000K (neutral white) or 6500K (cool white). Throwy beam with good intensity. Other emitter options include SST40, XHP70.3 HI, 719A (high CRI), and specialty wavelengths (red, green, blue, IR).
At a glance
Key specifications
How it works
Controls & interface
Performance behavior
Output & regulation
- Driver
- Buck
- Thermal control
- Temperature feedback
- PWM
- Not detected / listed
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
- reflector_SMO
- Head diameter
- 62.599998474121094 mm
- Emitter
- Luminus SFT40
- CCT
- 5000K
SFT40 available in 5000K (neutral white) or 6500K (cool white). Throwy beam with good intensity. Other emitter options include SST40, XHP70.3 HI, 719A (high CRI), and specialty wavelengths (red, green, blue, IR).
Battery & charging
- Cell
- 21700
- Battery included
- Yes
- Onboard charging
- None — external charger
- Low-voltage protection
- Yes
Size & construction
- Length
- 170.5 mm
- Head diameter
- 62.599998474121094 mm
- Weight
- 284 g
- Body
- aluminum
- Finish
- MAO (hard anodizing)
Carry & enthusiast features
Price & availability
Where to buy
Typical price: €32
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Sources & technical references
Use the original sources for context, revision details and methodology.