Seiko Cal. 6646 - 626

The 6646-626 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-5d31be70d8aa]

Also known as: Monster, Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1987

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