Seiko Cal. 4420 - 314

The Seiko 4420-314 represents an important milestone in Seiko's 1966 lineup. Powered by the 4420 caliber with 21j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-d3c52c7202f5]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1966

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