Seiko Cal. 6631 - 189

The Seiko 6631-189 represents an important milestone in Seiko's 1989 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-9533d4ae73f9]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1989

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