Seiko Cal. 6344 - 639

The 6344-639 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6344 caliber with 31j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-fd50aec51c0e]

Also known as: UFO, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1993

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