Seiko Cal. 5639 - 256

The Seiko 5639-256 represents an important milestone in Seiko's 1968 lineup. With its 19mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-e666aeb74697]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1968

Related Models

• Seiko 7077-704
• Seiko 4497-310
• Seiko 6338-870
• Seiko 7170-587
• Seiko 5673-118
• Seiko 4497-175
• Seiko 6625-599
• Seiko 6389-923
• Seiko 7019-507
• Seiko 7011-851
• Seiko 5663-618
• Seiko 0747-279