• Case diameter: 39mm
• Movement: automatic

The Omega Speedmaster Day-Date Ref. 3520.53.00 is a vintage Moonwatch variant from the 1990s that blends a chronograph with a triple calendar and AM/PM indicator.

• Condition: Good
• Movement: Automatic, Omega caliber 1151 (based on Valjoux 7751)
• Case size: 39mm diameter
• Crystal type: Scratch-resistant sapphire

This Omega Speedmaster MK40 Triple Calendar features a 39mm case size, making it very wearable and comfortable. It has tritium lume, produced around 1996-1997. The watch is part of a notable reference in Omega's back catalogue.

• Condition: Good condition with light scratches on the case and bracelet
• Case size: 39mm
• Wrist size compatibility: up to 6.8 inches
• Serial production year: around 1996-1997

This Omega Speedmaster Date MK40 Chronograph features a mechanical automatic movement, chronograph function, and date display.

• Condition: 90%
• Model: Speedmaster Date MK40 Chronograph
• Size: 39mm diameter
• Case material: Stainless Steel