Seiko Cal. 6637 - 934

Released in 1970, the Cal. 6637 with design code 934 was part of Seiko's domestic market collection. With its 18mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-5c5ea064fae7]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1970

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