Seiko Cal. 6658 - 636

The Seiko 6658-636 represents an important milestone in Seiko's 1975 lineup. It features a Green dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-d305b0dfeece]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1975

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