Seiko Cal. 6620 - 452

The 6620-452 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6620 caliber with 25j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-61ec73036ce3]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1978

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