Seiko Cal. 4420 - 305

The Seiko 4420-305 represents an important milestone in Seiko's 1968 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-4d0e533ef9db]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1968

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