Seiko Cal. 6337 - 990

The 6337-990 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6337 caliber with 33j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-a1c08643f74e]

Also known as: Turtle, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1980

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