Seiko Cal. 5663 - 770

This Hand-Winding model from 1979 features a 36mm PVD Black case. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-e22a3ffd51ee]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1979

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