Seiko Cal. 6631 - 992

The 6631-992 is a sought-after Solar piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-cb5b70db3a8d]

Also known as: UFO, Crown

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1969

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