Seiko Cal. 6645 - 374

The 6645-374 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6645 caliber with 34j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-6fd1a0d49bb0]

Also known as: Samurai, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1981

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