Seiko Cal. 5285 - 307

This Hand-Winding model from 1969 features a 39mm Hardlex-Coated Steel case. With its 22mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-ffb063efe112]

Also known as: Helmet, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1969

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