Seiko UW01 Movement Details

Seiko caliber UW01 is a digital watch movement produced from around 1984.

Battery:BR2325 / (Lithium)
Accuracy:±15 seconds/month
Day / date?Day + date
GMT / world time?No
Rate:32,768 Hz
Size / diameter:30.9mm x 28.8mm
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 reset guide
Technical guide for UW01A
Related movements: UW02