Seiko Cal. 6631 - 576

The 6631-576 is a sought-after Solar piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-0b14ffa337a0]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1979

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