Seiko Cal. 4538 - 538

The Seiko 4538-538 represents an important milestone in Seiko's 1988 lineup. Powered by the 4538 caliber with 30j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-416ac3bea03e]

Also known as: Monster, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1988

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