Seiko Cal. 4538 - 538

Seiko 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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