Seiko Cal. 6665 - 690

The Seiko 6665-690 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-5259cad0c7f9]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1971

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