Seiko Cal. 5668 - 910

The Seiko 5668-910 represents an important milestone in Seiko's 1988 lineup. Powered by the 5668 caliber with 18j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-987a4dbe2ca6]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1988

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