Seiko Cal. 6688 - 847

This Hand-Winding model from 1988 features a 45mm Titanium case. Powered by the 6688 caliber with 28j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-c9a1ae806091]

Also known as: Sumo, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1988

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