Seiko Cal. 6631 - 931

The 6631-931 is a sought-after Automatic piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-289e7f9de81f]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1986

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