Seiko Cal. 6620 - 166

The Seiko 6620-166 represents an important milestone in Seiko's 1997 lineup. It features a Green dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-fd485be35dee]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1997

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