Seiko Cal. 6620 - 599

The Seiko 6620-599 represents an important milestone in Seiko's 1985 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-d16d6073c1ac]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1985

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