Seiko Cal. 6688 - 974

This Spring Drive model from 1998 features a 40mm Titanium case. Powered by the 6688 caliber with 25j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-352b86e10122]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1998

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