Seiko Cal. 6663 - 680

This Solar model from 1977 features a 44mm PVD Black case. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-fffba882874b]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1977

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