The H. Moser & Cie Endeavour Big Date Ref. 342.502-005 combines a platinum case with a refined grey slate dial featuring a distinctive sun-pattern ground finish.

At its center is an in-house Moser HMC342.502 manual-winding movement, operating at 18,000 vibrations per hour. The movement provides hours, minutes, seconds, a big date, and a power-reserve display, with a stated 7-day power reserve.

The watch features a transparent caseback, convex sapphire crystal, fixed platinum bezel and a platinum double-pull crown mechanism. It is fitted with a black alligator leather strap and platinum buckle bearing the Moser logo.

Specifications:

• Brand: H. Moser & Cie
• Model: Endeavour Big Date
• Reference: 342.502-005
• Year: Unknown
• Condition: Pre-owned Very Good
• Case Shape: Round
• Case Diameter: 40.8 mm
• Case Material: Platinum
• Bezel Material: Platinum
• Bezel Function: Fixed
• Crystal: Convex sapphire crystal
• Caseback: Transparent
• Dial: Grey slate dial with sun-pattern ground finish
• Movement: Manual Wind
• Movement: In-house Moser Cal. HMC342.502
• Frequency: 18,000 vib/h
• Functions: Hour, Minutes, Seconds, Big Date, Power reserve
• Calendar: Automatic big date at 6 o'clock
• Power Reserve: 7-day power reserve display on the movement side
• Water Resistance: 20m / 65ft
• Crown: Platinum double-pull crown mechanism
• Strap: Black alligator leather
• Clasp: Platinum buckle with Moser logo
• Set: Watch only