Seiko Cal. 5688 - 137

This Automatic model from 1994 features a 38mm Hardlex-Coated Steel case. Powered by the 5688 caliber with 29j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-af3bf41b7c7f]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1994

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