Seiko Cal. 6139 - 577

The Seiko 6139-577 represents an important milestone in Seiko's 1988 lineup. It features a Black dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-cd939dd0a15a]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

28j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1988

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