Seiko Cal. 4550 - 981

This Hand-Winding model from 1978 features a 44mm Stainless Steel case. With its 20mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-a140b0a5cd46]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1978

Related Models

• Seiko 3826-601
• Seiko 4442-867
• Seiko 3826-174
• Seiko 4527-882
• Seiko 0762-225
• Seiko 5618-441
• Seiko 7025-476
• Seiko 4448-439
• Seiko 6622-843
• Seiko 6237-335
• Seiko 6217-961
• Seiko 3835-761