Specifications Annual Calendar Chronograph Ref. 5960R in 18K rose gold

Movement
Caliber CH 28-520 IRM QA 24H
Self-winding mechanical movement, column wheel-chronograph with flyback, Annual Calendar, power-reserve indicator, 24-hour display, sweep seconds (chronograph hand)
Diameter: 33 mm (basic movement 30 mm, calendar module 33 mm)
Height: 7.68 mm (movement 5.20 mm, calendar module 2.48 mm)
Number of parts: 456 (movement 302, calendar module 154)
Number of jewels: 40 (movement 35, calendar module 5)
Power reserve: Max. 55 hours
Winding rotor: Central rotor in 21K gold, unidirectional winding; oil-free ball bearing with zirconium balls
Balance: Four-arm Gyromax with four inertia blocks
Frequency: 28,800 semi-oscillations/hour (4 Hz)
Balance spring: Breguet
Functions: Two-position crown:
Pulled out: Setting the time
Pushed in: Winding
Displays: Center hour and minute hands
Sweep chrono/seconds hand
Power-reserve indicator at 12 o'clock
Dual subsidiary counter dial at 6 o'clock with
- 60-minute counter (counts elapsed minutes on 2 concentric scales from 0 to 30 in red and from 30 to 60 in blue)
- 12-hour counter
Display apertures:
Day of week between 10 and 11 o'clock
Date at 12 o'clock in a blanked and diamond-polished white-gold frame
Month between 1 and 2 o'clock
24-hour display (am/pm) at 6 o'clock
Function buttons:
Chronograph start and stop at 2 o'clock
Chronograph hand reset and flyback at 4 o'clock
Corrector push pieces:
Day-of-week correction at 9 o'clock
Date correction between 9 and 10 o'clock
Month correction at 10 o'clock

Features
Case: 18K rose gold, crystal (antireflection coated) and sapphire-crystal case back
Water-resistant to 25 meters
Case dimensions: Diameter: 40.5 mm
Diameter including crown: 43.25 mm
Overall height: 13.80 mm (crystal to lugs)
Height: 13.55 mm (crystal to back)
Width between lugs: 21 mm
Dial: Two-tone: Dark gray satin-finished and silvery gray snailed
Eight hour markers in 18K rose gold
Eleven Superluminova luminescent dots
Leaf-shaped hour and minute hands in 18K rose gold with Superluminova luminescent coating
Baton-style chronograph hand, andblasted, rhodiumed steel with counterweight
Power-reserve indicator with baton-style hand in 18K rose gold, sandblasted and rhodiumed
Silvery gray snailed subsidiary dial
Baton-style hour-counter hand with counterweight, blue-lacquered brass
Baton-style minute counter hand with counterweight, red-lacquered brass
Strap: Hand-stitched, large-scaled, brown alligator with Calatrava fold-over clasp in 18K rose gold