Seiko Cal. 6635 - 231

The Seiko 6635-231 represents an important milestone in Seiko's 1994 lineup. Powered by the 6635 caliber with 35j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-d7074a89887a]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1994

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