Seiko Cal. 6635 - 372

The Seiko 6635-372 represents an important milestone in Seiko's 1989 lineup. Powered by the 6635 caliber with 27j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-9a23bc621b33]

Also known as: Panda, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1989

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