Seiko 1520 Movement Details

Seiko caliber 1520 is a hand winding watch movement.

Day / date?No
GMT / world time?No
Chronograph?No
Rate:19,800 bph
Number of jewels:17 or 23
Lift angle:53º
Size / diameter:19.8mm x 9.6mm
Height:3.5mm
Stem code: 351152
Balance wheel code: 310150
Mainspring code: 401150
Development division:Daini (Kameido, Tokyo)
PDF guides: Parts list for 1520A
Related movements: 15