Seiko Cal. 4560 - 640

Released in 1979, the Cal. 4560 with design code 640 was part of Seiko's domestic market collection. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-e0319aad8aaa]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

White

Jewels

34j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1979

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