The Omega Speedmaster Mark 40 is full of features including tachymeter chronograph and triple calendar function.
Model: Omega Speedmaster Mark 40 Chronograph triple calendar
Reference: 3521.80.00
Year: mid 90's
Size: 39mm
Condition: Good (light signs of wear or scratches)
Gender: Mens / Unisex
Material: Stainless Steel
Box: No
Original Papers: No
Warranty: 1 year in-house