Seiko Cal. 5648 - 334

This Spring Drive model from 1975 features a 46mm Titanium case. With its 18mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-588083f03e6c]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1975

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