Winding: automatic

Frequency - Variations per hour: 3Hz - 21600 V/h

Power Reserve: 42 hours

Accuracy: -20/+40 seconds / day

Jewels: 21

Anti-shock: Parashock

Calibre Miyota 821D

Japanese made

Base: Miyota 8215

Thickness: 5.67

Central hr

Central min

Central sec

date at 3

Notes: 821D is similar to 821A, except that the 821D is only used for Citizen & Bulova and is not sold to third party microbrands