Seiko Cal. 6344 - 630

The 6344-630 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6344 caliber with 27j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-7216f475d5d7]

Also known as: Samurai, Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1980

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