Seiko Cal. 5687 - 581

This Spring Drive model from 1966 features a 44mm PVD Black case. With its 18mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-57e3c7c551a1]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1966

Related Models

• Seiko 6171-966
• Seiko 7128-938
• Seiko 7080-483
• Seiko 5259-535
• Seiko 6693-555
• Seiko 6348-473
• Seiko 5670-115
• Seiko 6221-453
• Seiko 5659-228
• Seiko 3893-886
• Seiko 6396-241
• Seiko 5234-365