Seiko Cal. 4521 - 338

The Seiko 4521-338 represents an important milestone in Seiko's 1977 lineup. Powered by the 4521 caliber with 35j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-ae71d6086706]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1977

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