Rolex Oyster Perpetual Ref. 177200 – 70160/en

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Rolex Oyster Perpetual Ref. 177200 – 70160 (case – bracelet)

Oyster Perpetual 177200
Oyster Perpetual 177200 Azzurro blue,
Oyster Perpetual 177200 White lacquer

Press release:
Baselworld 2014 The quintessential Oyster by Rolex

  CASE
Type Oyster (monobloc middle case, screw-down case back,
and winding crown
Diameter 31 mm
Material 904L stainless steel superalloy, satin finished
Case back Screw-down with Rolex fluting
Bezel Domed
Winding crown Screw-down, Twinlock double waterproofness system
Crystal Scratch-resistant sapphire
Waterproofness 100 metres (330 feet)
   
  MOVEMENT
Calibre 2231, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Precision Officially certified Swiss chronometer (COSC)
Functions Centre hour, minute and seconds hands
Stop-seconds for precise time setting
Oscillator Frequency: 28,800 beats/hour (4Hz)
Hairspring with Breguet overcoil
Balance wheel with variable inertia
High-precision regulating via two gold Microstella nuts
Traversing balance bridge
Jeweling 31 rubies
Power reserve Approximately 48 hours
   
  DIAL
Colour White lacquer
Azzurro blue, sunray finish
Hour markers Roman numerals III, VI and IX in 18 ct white gold, blue hour ring
Hands 18 ct white gold with phosphorescent material
   
  BRACELET
Type Oyster three-piece solid links
Material 904L stainless steel superalloy, satin finished, polished edges
Clasp Folding Oysterclasp