Profoto
Profoto B10 Plus OCF Flash Head
$2095
Best Studio Strobes · head-to-head
Profoto B10 Plus OCF Flash Head vs Westcott FJ400 Strobe 400Ws with AC/DC Battery
A sourced, side-by-side comparison. Westcott FJ400 Strobe 400Ws with AC/DC Battery is cheaper at $349.45. Every spec and price links to its source.
Westcott
Westcott FJ400 Strobe 400Ws with AC/DC Battery
$349.45Cheaper
Which is better: the Profoto B10 Plus OCF Flash Head or Westcott FJ400 Strobe 400Ws with AC/DC Battery?
On the specs we track, they're closely matched. The Westcott FJ400 Strobe 400Ws with AC/DC Battery is the cheaper at $349.45.
See Profoto B10 Plus OCF Flash Head on Amazon See Westcott FJ400 Strobe 400Ws with AC/DC Battery on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Profoto B10 Plus OCF Flash Head | Westcott FJ400 Strobe 400Ws with AC/DC Battery |
|---|---|---|
| US price | $2095 | $349.45 |
| Brand | Profoto | Westcott |
| Released | — | — |
| Power output ws | 500 | 400 |
| Flash duration t01 | as fast as 1/50000 sec in Freeze mode; 1/3400 sec best case in Normal mode | Normal mode 1/280-1/3000 sec; Freeze mode 1/280-1/7000 sec |
| Recycle time s | 0.05-2.46 | 0.05-0.9 |
| Ttl hss support | TTL (Canon, Nikon, Sony, Fujifilm via Profoto AirTTL/Air Remote); HSS to 1/8000s | TTL; HSS to 1/8000s; Rear Curtain Sync |
| Modeling lamp (W) | 150W-equivalent LED (2500 lm max, dimmable 10-100%) | 20 |
| Color temperature k | 3000-6500 adjustable LED modeling light (±500K); flash tube ~5500K | 5500 |
| Power source | Built-in rechargeable lithium-ion battery (up to 200 full-power flashes, or 75 min continuous LED use) | Removable 14.8V/4400mAh lithium-polymer battery (480+ full-power flashes) or AC power |
Sources — Profoto B10 Plus OCF Flash Head: profoto.com (verified 2026-08-09). Westcott FJ400 Strobe 400Ws with AC/DC Battery: fjwestcott.com (verified 2026-08-09).
What's the difference between the Profoto B10 Plus OCF Flash Head and Westcott FJ400 Strobe 400Ws with AC/DC Battery?
Where the two actually differ on the specs we track (7 of 7). Matching specs are omitted.
- Power output ws: Profoto B10 Plus OCF Flash Head 500 vs Westcott FJ400 Strobe 400Ws with AC/DC Battery 400
- Flash duration t01: Profoto B10 Plus OCF Flash Head as fast as 1/50000 sec in Freeze mode; 1/3400 sec best case in Normal mode vs Westcott FJ400 Strobe 400Ws with AC/DC Battery Normal mode 1/280-1/3000 sec; Freeze mode 1/280-1/7000 sec
- Recycle time s: Profoto B10 Plus OCF Flash Head 0.05-2.46 vs Westcott FJ400 Strobe 400Ws with AC/DC Battery 0.05-0.9
- Ttl hss support: Profoto B10 Plus OCF Flash Head TTL (Canon, Nikon, Sony, Fujifilm via Profoto AirTTL/Air Remote); HSS to 1/8000s vs Westcott FJ400 Strobe 400Ws with AC/DC Battery TTL; HSS to 1/8000s; Rear Curtain Sync
- Modeling lamp (W): Profoto B10 Plus OCF Flash Head 150W-equivalent LED (2500 lm max, dimmable 10-100%) vs Westcott FJ400 Strobe 400Ws with AC/DC Battery 20
- Color temperature k: Profoto B10 Plus OCF Flash Head 3000-6500 adjustable LED modeling light (±500K); flash tube ~5500K vs Westcott FJ400 Strobe 400Ws with AC/DC Battery 5500
- Power source: Profoto B10 Plus OCF Flash Head Built-in rechargeable lithium-ion battery (up to 200 full-power flashes, or 75 min continuous LED use) vs Westcott FJ400 Strobe 400Ws with AC/DC Battery Removable 14.8V/4400mAh lithium-polymer battery (480+ full-power flashes) or AC power