Longines Master Collection Annual Calendar Automatic Silver Barleycorn Dial Brown Alligator Strap 40 mm [L2.910.4.78.3]

The Longines Master Collection Annual Calendar [L2.910.4.78.3] Automatic represents a sophisticated expression of Swiss horology, distinguished by its practical and highly regarded annual calendar complication. Crafted in a polished 40 mm stainless steel case, this refined timepiece features a beautifully textured silver barleycorn dial that provides depth, clarity, and timeless elegance.

The annual calendar function automatically accounts for months with 30 and 31 days, requiring adjustment only once per year at the end of February — a hallmark of advanced mechanical watchmaking. Complemented by a date display, this complication enhances everyday usability while preserving the watch’s balanced and elegant dial layout.

Polished hands and applied indexes ensure excellent legibility, while the watch is powered by a self-winding Swiss mechanical movement equipped with a silicon balance-spring, delivering precision, reliability, and an extended power reserve of up to 72 hours. Finished with a luxurious brown alligator leather strap, secured by a folding clasp, this Annual Calendar model is perfectly suited for refined daily wear and formal occasions alike.

Protected by a scratch-resistant sapphire crystal and water resistant to 3 bar (30 m), the Longines Master Collection Annual Calendar [L2.910.4.78.3] is an ideal choice for collectors seeking classic aesthetics paired with meaningful mechanical complication.

Technical Specifications

• Brand: Longines

• Model: Master Collection Annual Calendar Automatic

• Reference: L2.910.4.78.3

• Alternate Reference: L29104783

• Collection: Master Collection

• Movement: Automatic self-winding mechanical movement with silicon balance-spring

• Power Reserve: Up to 72 hours

• Case Material: Stainless steel

• Case Diameter: 40 mm

• Crystal: Scratch-resistant sapphire crystal

• Dial: Silver barleycorn with annual calendar and date functions

• Strap: Brown alligator leather with folding clasp

• Functions: Hours, minutes, seconds, annual calendar, date

• Water Resistance: 3 bar (30 m)

• Warranty: 5-Year Longines International Warranty

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