Longines Master Collection Automatic Moonphase Black Diamond Dial Stainless Steel Case & Bracelet 40 mm [L2.909.4.57.6]

Longines Master Collection Moonphase L2.909.4.57.6 front view polished black lacquered diamond dial with moonphase display on stainless steel bracelet
Close-up of Longines Master Collection black diamond dial showing diamond hour markers and moonphase indicator
Side profile of Longines Master Collection 40 mm stainless steel case and bracelet
Exhibition case back view of Longines Master Collection moonphase automatic movement
Longines Master Collection Moonphase on wrist highlighting classic proportions

Long Description
The Longines Master Collection [L2.909.4.57.6] automatic moonphase is a refined expression of classical Swiss watchmaking, marrying elegant design with practical complexity. Its polished black lacquered dial is punctuated with luminous diamond hour markers that add subtle radiance and distinction, creating depth and sophistication on the wrist.

The moonphase and date indicators are precisely positioned for easy reading while preserving harmonious dial symmetry. Polished silver-tone hands and applied indices enhance legibility against the rich black finish, reinforcing the timepiece’s timeless aesthetic.

Powered by a self-winding mechanical movement with an ample power reserve, this 40 mm stainless steel moonphase watch carries both heritage and functionality. The integrated stainless steel bracelet with a triple safety folding clasp and push-piece mechanism offers secure comfort and versatility for everyday wear or more formal occasions.

Built for collectors and enthusiasts who appreciate the union of classical design and technical innovation, this Master Collection Moonphase model exemplifies Longines’ enduring commitment to horological excellence.

Technical Specifications

• Brand: Longines

• Model: Master Collection Moonphase

• Reference: L2.909.4.57.6

• Alternate Reference: L29094576

• Collection: Master Collection Moonphase

• Movement: Automatic self-winding mechanical

• Case Material: Stainless steel

• Case Diameter: 40 mm

• Crystal: Scratch-resistant sapphire crystal

• Dial: Black lacquered with diamond hour markers and moonphase & date displays

• Bracelet: Stainless steel with triple safety folding clasp and push-piece opening

• Functions: Hours, minutes, seconds, moonphase, date

• Water Resistance: 3 bar (30 m)

• Warranty: 5-Year Longines International Warranty

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