Seiko Cal. 4421 - 688

The 4421-688 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-749b73a7c22a]

Also known as: Tuna, Pogue

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1988

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