Seiko Cal. 6642 - 683

This Automatic model from 1965 features a 42mm Hardlex-Coated Steel case. Powered by the 6642 caliber with 20j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-b10a637bdd99]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1965

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