Seiko Cal. 6656 - 225

This Spring Drive model from 1993 features a 40mm Hardlex-Coated Steel case. It features a Navy dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-d591ae2d1002]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1993

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