Seiko 7A38 Movement Details

Seiko caliber 7A38 is an analog quartz watch movement. Production started around 1984.
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Sub-brands: Sports 100, SQ, Speedmaster
Battery:SR936SW / 394 (Silver oxide)
Accuracy:±15 seconds/month
Day / date?Day + date
GMT / world time?No
Rate:32,768 Hz
Number of jewels:15
Size / diameter:29.0mm
Development division:Suwa (Nagano Prefecture, Japan)
Notes:Used in a Ferrari-branded watch, renamed as "cal. 531". Has a battery life indicator. The same as cal. 7A28 but with day and date display.
PDF guides: Technical guide : 7A38A
Related movements: 7A28 7A34 7A36 7A48 7A54

Part Codes

Stem code: 354728
Date wheel code: 801593
Screw codes: 022235 (dial screw), 022286, 022341, 022424, 022745