Seiko Cal. 5240 - 368

This Hand-Winding model from 1974 features a 42mm Titanium case. With its 21mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-a0531ec166bd]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

25j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1974

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