Seiko Cal. 5688 - 907

The Seiko 5688-907 represents an important milestone in Seiko's 1967 lineup. It features a Black dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-8151b08b401d]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1967

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