Seiko Cal. 6699 - 536

The Seiko 6699-536 represents an important milestone in Seiko's 1980 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-15dc0ad9ba72]

Also known as: Tuna, Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1980

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