Seiko Cal. 4421 - 309

Released in 1974, the Cal. 4421 with design code 309 was part of Seiko's domestic market collection. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-c0a87ca87ba1]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1974

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