Seiko Cal. 6187 - 331

Released in 1989, the Cal. 6187 with design code 331 was part of Seiko's domestic market collection. With its 18mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-0751d2dd7efc]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1989

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