Seiko Cal. 4421 - 986

The 4421-986 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-5cfd460ffa21]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1999

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