Reference 647.10.11

Very good condition and excellent time keeping +6sec/day

No box, no papers 

Comes on Di modell waterproof strap and a bergeon screwdriver for strap change

There is a tiny mark on the bezel as highlighted in one of the pictures


General & Case Specifications

• Brand / Collection: Fortis / Cosmonauts.
• Case Material: Brushed 316L Stainless Steel.
• Case Diameter: 42 mm without the crown (reaches ~43 mm/44 mm with the extending bezel).
• Case Thickness: 13 mm.
• Lug Width: 20 mm.
• Bezel: Unidirectional external rotating bezel (0-60 dive configuration).
• Crystal: Scratch-resistant Sapphire crystal featuring double-sided anti-reflective (AR) coating.
• Caseback: Solid, screwed stainless steel.
• Water Resistance: 200 meters / 20 ATM (660 feet).

Dial & Hands

• Dial Color: Matte Black.
• Luminescence: SuperLuminova on both Arabic numeral hour markers and hands for high visibility in low-light environments.
• Layout: Clean analog layout with explicit indicator triangles (▲▼) next to the day/date window to show which direction to turn the crown when setting them.

Movement Details

• Movement Type: Mechanical Automatic (Self-winding).
• Caliber: ETA 2836-2 (Swiss Made).
• Jewels: 25 jewels.
• Frequency: 28,800 vibrations per hour (vph) / 4 Hz.
• Power Reserve: Approximately 40 to 42 hours.
• Functions: Hours, minutes, central sweeping seconds, quick-set Day of the week, and Date indicator at the 3 o'clock position.
• Shock Protection: Incabloc anti-shock system.
• Features: Hacking function (seconds-stop mechanism for precise time setting) and manual winding capability.