Seiko Cal. 4420 - 977

The 4420-977 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4420 caliber with 35j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-1f6ae5c667ea]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1993

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