Seiko Cal. 6688 - 300

The Seiko 6688-300 represents an important milestone in Seiko's 1966 lineup. Powered by the 6688 caliber with 36j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-8e1ef4656f01]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1966

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