Seiko Cal. 6646 - 458

Released in 1984, the Cal. 6646 with design code 458 was part of Seiko's domestic market collection. Powered by the 6646 caliber with 36j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-0ee2cccad97a]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1984

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