Seiko Cal. 4420 - 861

The Seiko 4420-861 represents an important milestone in Seiko's 1991 lineup. Powered by the 4420 caliber with 35j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-3cd8eda005c8]

Also known as: Bullhead, UFO

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1991

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