Seiko Cal. 6231 - 104

This Quartz model from 1979 features a 35mm Two-Tone case. It features a Navy dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-f9376a355706]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1979

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