Seiko Cal. 6620 - 679

The Seiko 6620-679 represents an important milestone in Seiko's 1976 lineup. It features a Silver dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-d20352441b8d]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1976

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