|Caliber Number||6308, 6308A|
|Base Caliber||Seiko 6309A|
|Vibrations Per Hour||21,600 bph|
|Power Reserve||47 hours|
|Lift Angle||54.5 degrees (needs confirmed)|
|Hands||1.5mm x 0.90mm x 0.20mm|
|Winding Direction||Bi-directional (Magic Lever)|
|Functions||Hours, minutes, central seconds, quickset date at 3:00|
|Country of Manufacture||Japan|
|Known Models||6308 (add more in the comments below…)|
The Seiko caliber 6308A is a vintage automatic workhorse movement from the 1980’s and as far back as 1976.
6308A VS 6309A:
The caliber 6308A is based on the Seiko caliber 6309A. The main difference between these two movements is that the 6309A has a day/date complication at 3:00, whereas the 6308A only has a date at 3:00.