The Longines Master Collection embodies the pinnacle of horological craftsmanship and timeless elegance. This emblematic line comprises an array of meticulously crafted models, each exemplifying Longines’ unwavering commitment to enduring style and technical excellence. From the classic simplicity of the dial to the intricate mechanical movements within, every element exudes a sense of quiet luxury. Whether adorned with intricate complications or boasting a clean, elegant design, these timepieces bear witness to Longines’ storied heritage and expertise in watchmaking.

Case
Shape: Round
Material: Stainless steel
Glass: Scratch-resistant sapphire crystal
Case Back: Transparent case back with sapphire crystal
Dimension: Ø 40.00 mm
Lug distance: 21 mm
Lug-to-lug: 46.70 mm
Thickness: 14.30 mm
Water Resistance: Water-resistant to 3 bar
Weight: 164.8 g

Dial & Hands
Dial color: Silver "barleycorn"
Hour markers: Painted Arabic numerals
Hands: Blued steel hands

Movement & Functions
Movement Type: Automatic
Functions: Hours, minutes, small seconds with 24 hours indicator at 9 o'clock. Date indicated by the half moon central hand. Moon phase display at 6 o'clock.
Caliber: L687
Movement Description: Self-winding mechanical movement beating at 28'800 vibrations per hour, with a power reserve up to 66 hours
Special Functions: Moon-phase
Chronograph: Column Wheel Chronograph
Chronograph Functions: Chronograph mechanism: central 60 seconds hand, moon phase display with 12 hours counter at 6 o'clock and 30 minutes counter with day and month display at 12 o'clock

Strap
Material: Stainless steel
Buckle: With triple safety folding clasp and push-piece opening mechanism

Reference
L2.673.4.78.6