Seiko Cal. 7020 - 231

The 7020-231 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-3181b94351b1]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1984

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