Seiko Cal. 6631 - 982

The Seiko 6631-982 represents an important milestone in Seiko's 1977 lineup. It features a Silver dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-cf19cbf23587]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1977

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