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45 MM Chronometer Steel - The Sporting Collection Men's Watches - Ralph Lauren UK

45 MM Chronometer Steel

Style Number

: 55574001

A perfect combination of classic design and superior sporting functionality, our 45 mm Chronometer Steel is imbued with the sleek aesthetic of Ralph Lauren's Black Label collection for men. Featuring a bold matte black galvanic dial accented with shiny white Roman numerals, a seconds subdial, a printed railroad-style minute track, and stylish Breguet-style hands, this polished steel chronometer makes a powerful statement. Finished with a luxurious alligator strap, this water-resistant watch is driven by a COSC-certified RL366 caliber self-winding mechanical movement. This Swiss-made timepiece offers precise performance and epitomizes the Ralph Lauren tradition of reimagining a vintage design to include modern sensibilities.

  • Stainless Steel
  • STD
Please select a size.


  • Case material: stainless steel. Crystal covering: antireflective convex sapphire. Case back: secured with six screws. Crown: stainless steel; our "RL" logo.
  • Center dial: matte black; galvanic. Roman numerals and minute track: white; printed. Hour and minute hands: shiny white; Breguet-style. Second hand: shiny white; sword-shaped.
  • Case diameter: 44.8 mm. Case thickness: 11.3 mm. Water resistance: up to 10 bar.
  • Strap: black alligator leather. Closure: stainless steel pin buckle.
  • Movement: self-winding mechanical with a COSC-certified chronometer; RL366 caliber. Décor: vertical Côtes de Genève.
  • Power reserve: ~42 hours. Jewels: 29. Frequency: 4 hertz; 28,800 vibrations/hour. Functions: hours; minutes; seconds.
  • Swiss made.
  • Each timepiece is elegantly presented in our signature "Ralph Lauren" alligator-embossed watch box and includes an Instruction Manual and a Guarantee Card.
  • This watch is shipped with a standard 115-mm-long strap. Due to state law, this product cannot be shipped to Delaware.

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