Seiko Cal. 5644 - 887

The Seiko 5644-887 represents an important milestone in Seiko's 1985 lineup. With its 20mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-921149365106]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1985

Related Models

• Seiko 0721-767
• Seiko 3888-176
• Seiko 7065-253
• Seiko 4547-355
• Seiko 6139-753
• Seiko 6237-559
• Seiko 4523-155
• Seiko 5236-191
• Seiko 6310-301
• Seiko 0733-517
• Seiko 6649-352
• Seiko 6168-241