Seiko Cal. 6643 - 990

The 6643-990 is a sought-after Solar piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-cdb4a7a288fd]

Also known as: Monster, Panda

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1983

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