Seiko Cal. 4520 - 328

This Hand-Winding model from 1975 features a 46mm Gold-Plated case. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-76c003902667]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1975

Related Models

• Seiko 0736-405
• Seiko 6157-238
• Seiko 4573-638
• Seiko 0770-728
• Seiko 5217-348
• Seiko 3843-172
• Seiko 3897-793
• Seiko 7030-309
• Seiko 5244-711
• Seiko 6683-484
• Seiko 0786-818
• Seiko 0752-743