Seiko Cal. 6391 - 870

This Quartz model from 1991 features a 37mm Two-Tone case. It features a Black dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-596a133b7a67]

Also known as: Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1991

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