Seiko Cal. 5640 - 794

The Seiko 5640-794 represents an important milestone in Seiko's 1979 lineup. It features a Silver dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-c0fd7c66c5ba]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1979

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