Seiko Cal. 6663 - 915

The Seiko 6663-915 represents an important milestone in Seiko's 1987 lineup. Powered by the 6663 caliber with 27j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-7a950ae35ca7]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1987

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