Seiko Cal. 5640 - 756

The 5640-756 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5640 caliber with 19j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-eeac3c944379]

Also known as: UFO, Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1997

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