Seiko Cal. 6646 - 551

The Seiko 6646-551 represents an important milestone in Seiko's 1989 lineup. Powered by the 6646 caliber with 28j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-716497963e4a]

Also known as: Sumo, Pogue

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1989

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