Seiko Cal. 4436 - 644

The 4436-644 is a sought-after Automatic piece from Seiko's golden era. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-90eb66fe30de]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1992

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