Seiko 6105 Movement Details

Seiko caliber 6105 is an automatic watch movement. Production started around 1968 and production finished in 1977.
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Day / date?Date only
GMT / world time?No
Hacking?Yes (6105B only)
Rate:21,600 bph
Number of jewels:17
Lift angle:54.5º
Size / diameter:27.0mm
Stem code: 354615
Balance wheel code: 310611
Mainspring code: 401615
Development division:Suwa (Nagano)
Notes:Similar to cal. 6106 but with fewer jewels and no day display (date only).
PDF guides: Technical guide : 6105A
Related movements: 6102 6106 6117