Seiko Cal. 5240 - 660

This Solar model from 1978 features a 36mm Stainless Steel case. With its 20mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-4fd3be07f24b]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1978

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