Seiko Cal. 6631 - 417

The Seiko 6631-417 represents an important milestone in Seiko's 1994 lineup. Powered by the 6631 caliber with 32j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-cdf18ec24b3a]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1994

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