Seiko Cal. 5657 - 321

This Quartz model from 1999 features a 37mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-6f23080bb3f6]

Also known as: Tuna, Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1999

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