Seiko Cal. 6640 - 716

The 6640-716 is a sought-after Solar piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-d3a8b9ea94ae]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1991

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