8”’ | Automatic | Swiss Lever | Sweeping Seconds | Date | Day |

Remarks:

• Automatic: manual winding possible
• Date and day with quick setting
• Movement family:
  • 2906A: 17 jewels
  • 2919A: 21 jewels
  • 2949A: 23 jewels

• Listing ID: 2249
• Manufacturer / Brand: Seiko
• Caliber: 2906A
• Size in French Lignes: 8'''
• Size range mm largest diameter: 0 - 22 mm
• Shape: Round
• Winding: Automatic
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: Date & Day
• Jewels: 17
• Setting Lever Screw/Pin Position: Right
• Balance Position: Left (240 - 360°)
• Shock Protection: Seiko Diashock
• Beats per hour: 28,800
• Balance Type: Glucydur
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1975
• Identification: Rotor marked with SEIKO and 2906A. Original data sheet available.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-39#post-5180433
• Country: Japan
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)