Seiko Cal. 6646 - 760

The Seiko 6646-760 represents an important milestone in Seiko's 1975 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-8b7735e3cb4a]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1975

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