Seiko Cal. 6621 - 600

The Seiko 6621-600 represents an important milestone in Seiko's 1971 lineup. It features a Cream dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-977d310dd96c]

Also known as: Monster, Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Cream

Jewels

27j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1971

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