Seiko Cal. 5640 - 794

The 5640-794 is a sought-after Automatic piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-6c2a06c64734]

Also known as: Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1969

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