Seiko Cal. 6337 - 903

This Spring Drive model from 1987 features a 43mm Hardlex-Coated Steel case. Powered by the 6337 caliber with 24j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-ce0913d0e974]

Also known as: Sumo, Shogun

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1987

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