Seiko UW01 Movement Details

Seiko caliber UW01 is a digital watch movement. Production started around 1984.
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Battery:BR2325 / (Lithium)
Accuracy:±15 seconds/month
Day / date?Day + date
GMT / world time?No
Chronograph?Yes
Alarm?Yes
Rate:32,768 Hz
Size / diameter:30.9mm x 28.8mm
Height:7.05mm
Development division:Daini (Kameido, Tokyo)
Notes:This movement powered watch model UC-2000 – the world’s first watch with computer functions. It had memory of up to 2,000 characters and could store telephone numbers and addresses as well as a diary or schedule for up to one month.
PDF guides: Battery replacement guide : UW01A
Technical guide
Related movements: UW02