Seiko Cal. 6331 - 313

This Automatic model from 1977 features a 37mm Hardlex-Coated Steel case. With its 21mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-905e5b73aea9]

Also known as: Panda, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Cream

Jewels

33j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1977

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