Seiko Cal. 6617 - 221

The Seiko 6617-221 represents an important milestone in Seiko's 1970 lineup. Powered by the 6617 caliber with 31j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-1f77d75e2e71]

Also known as: UFO, Crown

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1970

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