Seiko Cal. 6688 - 137

The Seiko 6688-137 represents an important milestone in Seiko's 1976 lineup. It features a Cream dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-939e2908d4bb]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1976

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