Seiko Cal. 5648 - 630

The 5648-630 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-1e73515c23c5]

Also known as: Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1981

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