SEIKO PROSPEX BLACK SERIES SPB255J1

The Seiko Prospex SPB255J1 is a limited-edition automatic diver's watch, also known as the "Black Series 1968 Re-Interpretation". It is inspired by the Seiko ref. 6159-7001 from 1968 and features an all-black aesthetic with orange highlights. The model was released in 2022 as part of a three-piece "Black Series" collection. 

Movement and features

• Caliber: Caliber 6R35.
• Power reserve: Approximately 70 hours.
• Accuracy: +25 to -15 seconds per day.
• Jewels: 24.
• Additional functions: Date display and stop-seconds hand function. 

 Exterior and dimensions

• Case material: Stainless steel with a hard black coating.
• Case dimensions: 42mm diameter, 48.8mm length (lug-to-lug), and 12.5mm thickness.
• Crystal: Sapphire with an anti-reflective coating on the inner surface.
• LumiBrite: Applied to the hands, indexes, and bezel for improved visibility in the dark.
• Bezel: Unidirectional rotating.
• Crown: Screw-down.
• Case back: Screw case back, engraved with "LIMITED EDITION" and a serial number.
• Water resistance: 200 meters / 660 feet.
• Weight: 109 grams. 

 Band and accessories

• Strap material: The watch comes with a brown polyester "SEICHU" strap and an additional black silicone strap.
• Strap hardware: The clasp and other hardware are black-coated. 

 Dial and design

• Dial color: Black.
• Dial details: Features large, applied round hour markers, and the orange color on the minute and second hands and bezel accents mimics the lights used for night diving. 

 Limited edition

• Quantity: 5,500 pieces available globally.