Seiko Cal. 5640 - 392

The 5640-392 is a sought-after Kinetic piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-5af30a4d1951]

Also known as: Sumo, UFO

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

46mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1968

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