Seiko Cal. 6649 - 621

The 6649-621 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6649 caliber with 33j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-b2e294f5fa04]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1997

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