Seiko 6155 Movement Details

Seiko caliber 6155 is a high grade automatic (with hand winding) watch movement produced from around 1970.

Sub-brands: Grand Seiko
Day / date?Date only
GMT / world time?No
Chronograph?No
Hacking?Yes
Rate:36,000 bph
Number of jewels:25
Size / diameter:27.0mm
Height:5.65mm
Stem code: 354616
Balance wheel code: 310617
Mainspring code: 201595
Date wheel code: 801615
Screw codes: 022150 (stud screw), 022252, 022269, 022270, 022271, 022351, 022372, 022458 (screw for oscillating weight), 022468, 022662, 022677, 022689, 022760, 022761 (dial screw)
Development division:Suwa (Nagano)
Notes:Only released as model 6155-8000. The same as cal. 6156 but without day display (date only).
Related movements: 6145 6146 6156