Seiko Cal. 6656 - 321

The Seiko 6656-321 represents an important milestone in Seiko's 1972 lineup. Powered by the 6656 caliber with 21j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-7b5bfbae400f]

Also known as: Silverwave, Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1972

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