Seiko Cal. 6631 - 971

The Seiko 6631-971 represents an important milestone in Seiko's 1980 lineup. It features a Silver dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-d62755817328]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1980

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