Seiko Cal. 5640 - 463

The Seiko 5640-463 represents an important milestone in Seiko's 1979 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-e4e3f22e214c]

Also known as: Panda, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1979

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