Seiko Cal. 4550 - 384

This Spring Drive model from 1973 features a 40mm PVD Black case. With its 21mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-0a20ee4489c5]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1973

Related Models

• Seiko 5660-978
• Seiko 4550-587
• Seiko 6382-303
• Seiko 5227-124
• Seiko 5259-329
• Seiko 6281-343
• Seiko 5254-874
• Seiko 6293-124
• Seiko 4576-430
• Seiko 7113-389
• Seiko 6631-343
• Seiko 5619-676