Seiko Cal. 6649 - 220

The 6649-220 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6649 caliber with 30j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-e7d2ff3c41d2]

Also known as: Sumo, Shogun

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1971

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