Seiko Cal. 6647 - 410

The 6647-410 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6647 caliber with 22j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-67d80fc8a5bd]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1987

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