Seiko Cal. 4528 - 311

This Automatic model from 1985 features a 38mm Hardlex-Coated Steel case. Powered by the 4528 caliber with 34j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-d4abe49dc4f0]

Also known as: Tuna, Bellmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1985

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