Seiko Cal. 5688 - 160

The Seiko 5688-160 represents an important milestone in Seiko's 1990 lineup. Powered by the 5688 caliber with 18j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-589329a954a1]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1990

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