Seiko 4227 Movement Details

Seiko caliber 4227 is an automatic (with hand winding) watch movement.
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Sub-brands: Seiko 5
Power reserve:40 hours
Accuracy:+55/-35 seconds/day
Day / date?Day + date
GMT / world time?No
Rate:21,600 bph
Number of jewels:21
Lift angle:49º in 4227A, 52º in 4227B
Size / diameter:10.5" or 23.4mm
Stem code: 351420
Balance wheel code: 310421
Mainspring code: 201420
PDF guides: Technical guide for 4205B, 4206B, 4207B, 4208B, 4225A & 4227A
Technical guide for 4205C, 4206C, 4207C, 4208C, 4225B & 4227B
Related movements: 4225