Retra Flash Pro Max II Underwater Strobe
Fifth-generation professional strobe — 190 Ws, 65% more light, faster recycle
The Retra Flash Pro Max II is Retra's fifth-generation professional underwater strobe. A fully redesigned reflector, enhanced electronics and an improved triggering system deliver 65% more actual light output, 25% faster recycle times and a 120% brighter pilot LED — all in the same compact form factor as the previous Pro Max. With 190 Ws of energy, 17 power levels, TTL/HSS and Bluetooth app control, it is built for demanding professional shooters who want refined light quality without compromise.
Consider the Pro Max II if you:
- Want Retra's best light quality and the highest output in the Pro line
- Shoot professionally and need fast, consistent recycle on travel-safe AA batteries
- Use the LSD snoot — the brighter pilot light makes aiming far easier
- Want app control, custom user modes and firmware updates over Bluetooth
At a Glance
| Energy | 190 Ws |
| Power levels | 17 selectable |
| Recycle time | 0 – 1.9 s |
| Colour temperature | ~4900 K |
| Battery | 4×AA (8×AA with Booster) |
| Pilot light | 1000 lm, two levels |
| Bayonet | Classic A1 |
| Warranty | 3-year Worldwide Retra Warranty |
Why the Pro Max II
65% more light, same size
A redesigned reflector, enhanced electronics and improved triggering channel more energy into light and less into heat — a 65% increase in actual output over the previous generation, with no added size or weight.
25% faster recycle
Li-ion-like recycle speed from widely available, travel-safe NiMH AA batteries — up to 2000 shots at 25% power with the 8×AA Booster configuration, and consistent power delivery in demanding conditions.
Brighter pilot, precise control
A 120% brighter 1000-lumen pilot light with two levels makes positioning and snoot work effortless, while 17 power levels give fine output control across roughly 7 F-stops.
Classic bayonet mount
The twist-lock Classic A1 bayonet is shared across all Retra Flash models and is compatible with every existing front-mounted Retra accessory, so you can change lighting styles on the go.
Leakage detection & app control
Built-in leakage detection with double O-ring protection seals the battery compartment from the electronics, and Bluetooth connectivity via the Retra UWT app adds firmware updates, custom user modes and on-board manuals.
What's in the Box
- 1× Retra Flash Pro Max II
- 1× Booster for 8×AA batteries (optional package)
- 1× Regular battery cap for 4×AA
- 2× USB Charger (optional package)
- 1× 1" mounting ball
- 1× Allen key
- 2× spare O-rings for battery compartment
- 1× silicone grease
- 3-year Retra Warranty
Specifications
| Performance | |
|---|---|
| Energy | 190 Ws |
| Recycle time | 0 – 1.9 s (8×AA Eneloop PRO) |
| Colour temperature | ~4900 K |
| Power levels | 17 (M: 13 levels, ~0.5 F-stop steps) |
| Modes | BATT/TEST, M, TTL, HSS, U1/U2, SOS |
| Pilot light | 1000 lm, two intensity levels |
| Power & runtime | |
| Power source | 4×AA, or 8×AA with Booster |
| Flashes at half power (Booster) | 1000+ |
| Flashes at full power (Booster) | 300+ |
| Connectivity | |
| TTL / HSS | Yes / Yes |
| Bluetooth | Yes (Retra UWT app) |
| Optical connector | Inon threaded / Sea&Sea plug |
| Bayonet mount | Classic A1 |
| Physical | |
| Weight (4×AA / 8×AA) | 888 g / 1005 g (with ball + batteries) |
| Dimensions | Ø102.5 mm × 148 mm (173 mm with Booster) |
| Housing | Monolithic aluminium alloy |
| Buoyancy | -70 g (-160 g with Booster) |
| Leakage detection | Yes |
Recommended accessories
The Classic A1 bayonet takes the full range of Retra front-mounted accessories.
Resources
Retra UWT, made in Slovenia (EU). 3-year Worldwide Retra Warranty. Price on Scubapix: A$2,875.38 ex-GST (A$3,162.92 inc-GST).