Seiko Cal. 6637 - 992

The Seiko 6637-992 represents an important milestone in Seiko's 1993 lineup. Powered by the 6637 caliber with 19j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-ef96cd3ce4fe]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1993

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