Seiko Cal. 4420 - 830

Released in 1982, the Cal. 4420 with design code 830 was part of Seiko's domestic market collection. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-f646fb1cf105]

Also known as: Rally, World Timer

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1982

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