Seiko Cal. 6681 - 531

This Spring Drive model from 1999 features a 37mm Two-Tone case. It features a Green dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-290c0ff8a19d]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1999

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