Seiko Cal. 6621 - 520

The 6621-520 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6621 caliber with 17j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-10f23ff50ce1]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1970

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