Seiko Cal. 6231 - 645

Released in 1977, the Cal. 6231 with design code 645 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-44c808af2763]

Also known as: Bullhead, Silverwave

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

19j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1977

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