Seiko Cal. 5640 - 424

This Automatic model from 1987 features a 42mm PVD Black case. With its 18mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-f7ea974bf469]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1987

Related Models

• Seiko 7045-748
• Seiko 7068-556
• Seiko 7053-395
• Seiko 6247-895
• Seiko 5688-407
• Seiko 4479-259
• Seiko 7175-480
• Seiko 6292-362
• Seiko 6311-927
• Seiko 5243-743
• Seiko 0720-994
• Seiko 6118-709