Seiko Cal. 4528 - 941

The Seiko 4528-941 represents an important milestone in Seiko's 1967 lineup. Powered by the 4528 caliber with 21j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-54fc2cbd2981]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1967

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