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Daytona 16523 
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DSCN0593_1280.JPG (207500 bytes) Click here for 
Rolex Daytona Commercials

Click here to download
 the article (1MB .pdf file)
 that compares the Zenith
 movement Daytona 
vs. in-house movement


Rolex Cosmograph was first introduced in early 1960's with hand wound Valjoux movement. This movement was later replaced in 1988 with automatic Zenith's version of El Primero  movement which was modified by Rolex (cal. 4030) before placed in the case. daytona_zenith_El primo mvt.jpg (134110 bytes) Original Zenith El Primero caliber

In 2001 Rolex introduced the new in-house made movement (cal. 4130) that is currently powering all Rolex Daytona Watches.

Rolex Oyster Perpetual - Cosmograph Daytona

Stainless Steel Case & 18K Yellow Gold Bezel
 Stainless Steel
• Specially engraved Bezel that can be used for
 calculating speed over known distance or
calculating production of units over time
• Scratch Resistant Synthetic Sapphire Crystal
• Oysterlock bracelet, model 78393A (now replaced with new style 78493) with folding safety clasp & quick-setting function (can be extended approx. 3 mm) 

On the right is Jocke's picture where 
you can see how it works

• 100m / 330ft water resistant
• Oyster Perpetual  Certified Automatic Chronometer
• Screw Down Crown
• Model 16523 - black dial with golden sub-dials

Instructions Manual Booklet.

Watch dimensions:
Lugs inside opening: 20mm
H:  46.75 mm -  lug-to-lug        
W: 38.75mm bezel only       
(43mm L side of the bezel to the R edge of the crown)      
Thickness: 12.5 mm including sapphire crystal. 


Automatic Chronograph Movement, Rolex's own spiral balance-spring; Kif shock absorption; bi-directional rotor; fine regulation via Microstella screws, Breguet balance-spring; stop-seconds function; official chronometer with C.O.S.C. certification

Caliber: 4030 
Jewels: 44
Beats per Hour: 28,800
Power Reserve: ?? Hours 
Beats per Second: 8
Dimensions: Diameter = 30.5mm,
Height = 6.5mm, 
Introduced in: 1988
 caliber 4030.jpg (120687 bytes)

Current U.S. MSRP: (10/2006)  $12,675
for 116523 replacement model





























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