Seiko Cal. 6331 - 507

The Seiko 6331-507 represents an important milestone in Seiko's 1985 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-6633125f93fb]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Burgundy

Jewels

33j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1985

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