The Patek Philippe Annual Calendar Chronograph Ref. 5960R shows true color in rose gold

After it was launched in January 2006, the Annual Calendar Chronograph Ref. 5960 instantly became a bestseller among Patek Philippe’s complications. With its patented Annual Calendar and Patek Philippe’s proprietary selfwinding chronograph movement, it offers functions that are very useful in everyday situations. Now, this technical opus, previously available only in platinum, also comes in a case made of 18K rose gold.

• Technical data
  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, sandblasted, 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

• . Mechanical self-winding movement. Caliber CH 28-520 IRM QA 24H.
• Chronograph with 60-minute and 12-hour monocounter at 6 o’clock. Day, date, and month in apertures.
• Power reserve and day/night display.
• Anthracite dial, gold applied hour markers. Strap: alligator with large rectangular scales, hand-stitched, matt dark brown.
• Fold-over clasp.
• Sapphire crystal case back.
• Water resistant to 25 m.
• Platinum.
• Geneva Seal hallmark.
• Case diameter: 40.5 mm.