Seiko Cal. 7021 - 390

The Seiko 7021-390 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-968a82110832]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1983

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