Seiko Cal. 4421 - 553

This Hand-Winding model from 1970 features a 45mm PVD Black case. With its 22mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-157535001101]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1970

Related Models

• Seiko 6128-141
• Seiko 6144-944
• Seiko 6293-678
• Seiko 3879-507
• Seiko 7163-655
• Seiko 6176-607
• Seiko 7138-358
• Seiko 0763-436
• Seiko 3896-201
• Seiko 3877-348
• Seiko 6384-393
• Seiko 4517-854