Seiko Cal. 5640 - 461

The 5640-461 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-191ed1390ed8]

Also known as: UFO, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1982

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