Seiko 7S25 Movement Details

Seiko caliber 7S25 is an automatic watch movement. Production was in the 2000s.
Find watches with this movement on eBay. Find watches with this movement for sale.

Sub-brands: Prospex
Power reserve:41 hours
Accuracy:+45/-35 seconds/day
Day / date?Date only
GMT / world time?No
Rate:21,600 bph
Number of jewels:21
Lift angle:53º
Size / diameter:27.0mm
Notes:The same as cal. 7S26 but without day display (date only). Note that the date wheel used for 7S25A and 7S25B is not compatible with 7S25C.
PDF guides: Technical guide : 7S25A, 7S35A & 7S55A
Technical guide : 7S25C & 7S35C
Related movements: 7S26 7S35 7S36 7S55

Part Codes

Stem code: 351260 (tap 10), 351261 (tap 10)
Balance wheel code: 310020, 310197
Mainspring code: 201024, 201075, 201083
Date wheel code: 878208 (black on white), 878209 (white on black), 878270 (black on white), 878271 (white on black)
Screw codes: 012123 (stud screw), 012168, 012354, 012420, 012485, 012539 (second reduction wheel screw), 012919 (ratchet wheel screw), 016705


Related Articles