Seiko Cal. 5640 - 255

The Seiko 5640-255 represents an important milestone in Seiko's 1992 lineup. With its 20mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-943aacf0ecb1]

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1992

Related Models

• Seiko 5625-288
• Seiko 6385-484
• Seiko 6243-595
• Seiko 4564-667
• Seiko 6387-803
• Seiko 4424-577
• Seiko 5287-508
• Seiko 4494-526
• Seiko 7050-785
• Seiko 7063-520
• Seiko 6114-317
• Seiko 6194-633