Seiko Cal. 5640 - 587

This Quartz model from 1978 features a 41mm PVD Black case. Powered by the 5640 caliber with 34j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-e7ca4232a6f2]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1978

Related Models

• Seiko 5227-937
• Seiko 6164-208
• Seiko 4488-906
• Seiko 5690-419
• Seiko 4476-280
• Seiko 6218-914
• Seiko 7037-478
• Seiko 6674-225
• Seiko 5274-838
• Seiko 6277-340
• Seiko 4434-962
• Seiko 6381-254