Seiko Cal. 6638 - 238

This Kinetic model from 1977 features a 44mm Gold-Plated case. Powered by the 6638 caliber with 36j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-86fa6c5e373d]

Also known as: Tuna, Bellmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1977

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