Seiko Cal. 5638 - 480

This Hand-Winding model from 1979 features a 35mm Titanium case. Powered by the 5638 caliber with 22j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-4ebb10a34f7c]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1979

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