Seiko Oyster Perpetual Date Just Galaxy Black

Key Characteristics & Analysis

• ​The Dial Hybrid:
  • ​Features the Seiko logo prominently at 12 o'clock.
  • ​Directly below the logo, it borrows iconic text trademarked by Rolex: "OYSTER PERPETUAL DATEJUST" and "SUPERLATIVE CHRONOMETER OFFICIALLY CERTIFIED".
• ​Aventurine / Starry Dial Effect: The face uses a deep navy blue background with fine metallic speckles mimicking a starry night sky or aventurine glass.
• ​Rolex-Inspired Case & Details:
  • ​Cyclops Lens: Magnifies the date window at 3 o'clock.
  • ​Case & Bracelet: Housed in a polished stainless steel Oyster-style case paired with a multi-link (Jubilee-style) metal bracelet.
• ​Movement Indicator: The text "JAPAN MOV'T" at the 6 o'clock mark indicates it likely uses an automatic Seiko movement (such as the popular NH35/NH36 caliber commonly used by custom modders).

​Summary: It is not an official factory release from Seiko or Rolex, but rather an aftermarket custom-built watch designed to mimic a Rolex Datejust featuring a sparkling aventurine-style dial and Seiko badging.