Seiko Cal. 6627 - 628

The 6627-628 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6627 caliber with 20j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-d3667af4e195]

Also known as: Helmet, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1975

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