Seiko Cal. 6689 - 812

The 6689-812 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-1b93f103775c]

Also known as: Sumo, Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1980

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