Seiko Cal. 6631 - 193

The Seiko 6631-193 represents an important milestone in Seiko's 1979 lineup. It features a White dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-adbd5b2d109d]

Also known as: Turtle, Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1979

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