Seiko Cal. 5243 - 501

This Spring Drive model from 1978 features a 36mm Titanium case. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-e5f129082d71]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1978

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