Seiko Cal. 6228 - 657

The 6228-657 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6228 caliber with 31j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-cba19c4fc98a]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1970

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