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The Black Series. A concept of “night vision.”
![](https://www.seikowatches.com/se-en/-/media/Images/GlobalEn/Seiko/Home/products/prospex/SPB433_SPRK43_SSC923/SPB433J1_wide.png?mh=1125&mw=2000&hash=78A8A066E51ED2E46C300DC90D1745BF)
The Green Lumibrite Pro shines brightly on the black dial, giving the impression of peering through a night-vision scope.
The brightest light for the darkest night.
This model features long-lasting bright Green Lumibrite Pro on the hour and seconds hands and the indexes. The lume shines a vivid green wherever you are, even in the darkest places. The black dial keeps reflection to a minimum, ensuring the highest level of legibility.
![](https://www.seikowatches.com/se-en/-/media/Images/GlobalEn/Seiko/Home/products/prospex/SPB433_SPRK43_SSC923/SPB433J1_03.png?mh=630&mw=1120&hash=CC5A17D2E226D4CFEE3A6FF48B219D73)
Specifications
Movement
- Caliber Number
- 6R35
- Movement Type
- Automatic with manual winding
- Precision
- +25 to -15 seconds per day
- Power reserve
- Approx. 70 hours
- Jewels
- 24
- Functions
-
- Stop second hand function
- Date display
Case/Band
- Case Material
- Stainless steel (hard coating)with ceramic bezel
- Case Size
-
Thickness:13.4mm
Diameter:45.0mm
Lug-to-lug:52.6mm - Crystal
- Sapphire crystal
- Crystal Coating
- Anti-reflective coating on inner surface
- LumiBrite
- LumiBrite on hands, index(es) and bezel
- Clasp
- Three-fold clasp with secure lock , push button release with extender
- Distance between lugs
- 20mm
Other Details
- Water Resistance
- 200m / 660ft diver's
- Magnetic Resistance
- 4,800 A/m
- Weight
- 190.0g
- Features
-
- LIMITED EDITION on the case back
- Serial number engraved on the case back
- Unidirectional rotating bezel
- Screw-down crown
- Three-fold clasp with secure lock and extender
- Screw case back
- In an actual product, the case back direction might be different from the photograph.