Seiko Cal. 4421 - 402

The Seiko 4421-402 represents an important milestone in Seiko's 1971 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-cc034537df3d]

Also known as: Tuna, Panda

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1971

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