Seiko Cal. 4420 - 120

The 4420-120 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4420 caliber with 34j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-ccacd7b46cd8]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

34j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1967

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