Seiko Cal. 6620 - 990

Released in 1988, the Cal. 6620 with design code 990 was part of Seiko's domestic market collection. It features a Navy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-ff8ab095d391]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1988

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