Seiko Cal. 6631 - 792

The 6631-792 is a sought-after Spring Drive piece from Seiko's golden era. It features a Champagne dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-6e51cf5f1774]

Also known as: Monster, Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1984

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