Seiko Cal. 6637 - 354

The Seiko 6637-354 represents an important milestone in Seiko's 1988 lineup. Powered by the 6637 caliber with 35j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-f1a771eb5bf1]

Also known as: Bellmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1988

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