Seiko Cal. 6657 - 720

This Quartz model from 1987 features a 44mm Titanium case. It features a White dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-d419ebc70294]

Also known as: Monster, Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1987

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