Seiko Cal. 4420 - 785

The Seiko 4420-785 represents an important milestone in Seiko's 1970 lineup. Powered by the 4420 caliber with 22j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-94b688646572]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1970

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