12”’ | Automatic | Swiss Lever | No Seconds | Date | Day | Chronograph |

Remarks:

• Chronograph with column wheel, flyback function, 30 min recorder, 12 hour recorder
• Automatic with bidirectional winding
• Date and day with quick-setting
• Movement family:
  • Citizen 8100A: without hour counter
  • Citizen 8110A: with hour counter

• Listing ID: 6631
• Manufacturer / Brand: Citizen
• Caliber: 8110A
• Size: 12'''
• Shape: Round
• Winding: Automatic
• Hand Setting: Crown
• Seconds Hand: None
• Escapement: Lever (Swiss, English, Glashütte)
• Date & Day: Date & Day
• Other Functions: Chronograph
• Jewels: 23
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Citizen Parashock
• Beats per hour: 28,800
• Balance Type: Glucydur
• Power Reserve: Approx. 40 hours
• Production Period: 1972 - approx. 1981
• Identification: Movement marked with CITIZEN and 8110A.
• External Link 2: https://watch-movements.eu/blog/en/2021/01/03/the-citizen-8100a-8110a-automatic-chronograph/
• Country: Japan
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)