Seiko Cal. 6331 - 607

The Seiko 6331-607 represents an important milestone in Seiko's 1975 lineup. It features a Green dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-55ee32168d89]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1975

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