Winding: automatic

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

Power Reserve: 41 hours

Accuracy: -35/+45 seconds / day

Jewels: 24

Service every 5–7years

Calibre Seiko 4R36

Japanese made

Thickness: 5.32

central hr

central min

central sec

Date

Day

Watch brands using this movement: Seiko Prospex, Seiko 5

Quallity tier: Entry-mid

Reliability: Very high

Notes: Sweet-spot premium workhorses