Seiko Cal. 7139 - 660

The Seiko 7139-660 represents an important milestone in Seiko's 1989 lineup. The Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-df8cb888e23a]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1989

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