Seiko Cal. 5618 - 427

The Seiko 5618-427 represents an important milestone in Seiko's 1968 lineup. With its 20mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-e55f35d46c24]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1968

Related Models

• Seiko 0716-718
• Seiko 6395-482
• Seiko 6381-572
• Seiko 6193-316
• Seiko 0738-667
• Seiko 6397-724
• Seiko 0749-396
• Seiko 7185-881
• Seiko 7122-247
• Seiko 6199-983
• Seiko 0775-468
• Seiko 6629-662