Seiko Cal. 6181 - 635

Released in 1987, the Cal. 6181 with design code 635 was part of Seiko's domestic market collection. With its 19mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-5cdb697acf35]

Also known as: Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1987

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