Seiko Cal. 6688 - 835

The Seiko 6688-835 represents an important milestone in Seiko's 1966 lineup. Powered by the 6688 caliber with 18j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-8f130ade7604]

Also known as: Tuna, Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1966

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