Seiko Cal. 6610 - 503

The Seiko 6610-503 represents an important milestone in Seiko's 1981 lineup. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-303e79fff5eb]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1981

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