Seiko Cal. 6687 - 336

The 6687-336 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-8f22ea5a9126]

Also known as: Sumo, Bellmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

46mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1972

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