MOVEMENT Automatic winding small second, date Developed by Oris.

• NUMBER Oris 643, base ETA 2836-2
• DIMENSIONS Ø 25.60 mm, 11 1/2’’’
• FUNCTIONS Centre hands for hours and minutes, subsidiary second at 9 h, date window, date corrector, fine timing device and stop-second
• WINDING Automatic winding, bi-directionally rotating red rotor
• POWER-RESERVE 38 hrs
• VIBRATIONS 28’800 A/h, 4 Hz
• JEWELS 27

DIAL Silver

• MATERIAL Silver guilloche dial

 

STRAP/BRACELET Stainless steel

• MATERIAL Multi-piece stainless steel metal bracelet, butterfly folding clasp

 

The watch is preowned and in excellent condition.  This model is no longer available and is extremely hard to find.