Seiko Cal. 4521 - 450

Released in 1975, the Cal. 4521 with design code 450 was part of Seiko's domestic market collection. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-87b2ada6ccd4]

Also known as: Sumo, Goldfeather

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1975

Related Models

• Seiko 0714-582
• Seiko 4513-681
• Seiko 6634-983
• Seiko 5230-833
• Seiko 3824-594
• Seiko 6366-454
• Seiko 6648-385
• Seiko 0758-643
• Seiko 6665-845
• Seiko 4576-281
• Seiko 7021-662
• Seiko 7087-168