Seiko Cal. 6620 - 155

The Seiko 6620-155 represents an important milestone in Seiko's 1982 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-96662758988b]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1982

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