Seiko Cal. 6140 - 544

The Seiko 6140-544 represents an important milestone in Seiko's 1978 lineup. It features a Black dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-19d934afe6ae]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1978

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