Seiko Cal. 4528 - 285

This Hand-Winding model from 1968 features a 34mm Titanium case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-98ebab17dacc]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1968

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