Seiko Cal. 6656 - 991

The Seiko 6656-991 represents an important milestone in Seiko's 1982 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-84d169bb1041]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1982

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