Seiko Cal. 6137 - 988

Released in 1969, the Cal. 6137 with design code 988 was part of Seiko's domestic market collection. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-ec866eb50cea]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1969

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