Seiko Cal. 6688 - 138

The Seiko 6688-138 represents an important milestone in Seiko's 1977 lineup. Powered by the 6688 caliber with 26j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-0805d483a875]

Also known as: Samurai, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1977

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