Seiko Cal. 6337 - 739

The Seiko 6337-739 represents an important milestone in Seiko's 1977 lineup. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-a7fbe9179a0a]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1977

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