Seiko Cal. 6646 - 744

The 6646-744 is a sought-after Quartz piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-9471d6784788]

Also known as: Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1977

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