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Rolex 3135(?),Panerai P3000,Omega cal . 8500
3135
Year Introduced: 1988
Power Reserve: 50 Hours
Jewels: 31 Jewels
Description: Date - Certified Chronometer with Microstella regulating system with free-sprung balance, Breguet overcoil balance spring and Kif shock absorption
P.3000
Base Movement: Manifattura
Year Introduced: 2010
Power Reserve: 3 Days
Jewels: 21 Jewels
Description:
Hand-wound mechanical, with hours and minutes. 2 Barrels. 21,600vph.
omega 8500
Model: Caliber 8500
Description: Mechanical movement with co-axial escapement, automatic winding
25’200 vibrations per hour (3.5 Hz)
39 jewels
Diameter: 29.0 mm (13 lignes)
Thickness: 5.50 mm
Functions: hours, minutes, seconds and date window
Power reserve: 60 hours
Shock absorption: Nivachoc
The 8500 movement is a twin barrel in series, which delivers a more stable power. It has a 60-hour power reserve and 39 jewels. The automatic winding mechanism with a bi-metal brass and tungsten rotor winds both ways, thus reducing winding time.