Seiko Cal. 4420 - 462

The 4420-462 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4420 caliber with 22j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-776dfd911fc4]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1988

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