Seiko Cal. 4427 - 489

This Spring Drive model from 1971 features a 44mm PVD Black case. With its 20mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-f3f5a60bb011]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1971

Related Models

• Seiko 6299-813
• Seiko 0754-186
• Seiko 4433-586
• Seiko 6691-323
• Seiko 6326-492
• Seiko 5630-512
• Seiko 5629-316
• Seiko 6395-705
• Seiko 7039-232
• Seiko 6215-601
• Seiko 6365-221
• Seiko 7049-142