Winding: automatic

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

Power Reserve: 60 hours

Accuracy: -20/+40 seconds / day

Jewels: 21

Service every 5–7years

Calibre Miyota 8315 standard

Japanese made

Thickness: 5.67

central hr

central min

central sec

Date

Watch brands using this movement: Citizen; Microbrands

Quallity tier: Improved 82xx

Reliability: Very high

Notes: Sweet-spot premium workhorses