Seiko Cal. 6620 - 317

The 6620-317 is a sought-after Quartz piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-bf65de87ff2b]

Also known as: Helmet, Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1991

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