Seiko Cal. 6166 - 731

The Seiko 6166-731 represents an important milestone in Seiko's 1976 lineup. It features a Black dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-58576059a8d8]

Also known as: Sumo, Panda

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1976

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