Seiko Cal. 6135 - 866

The Seiko 6135-866 represents an important milestone in Seiko's 1979 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-656866d501e9]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1979

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