Seiko Cal. 5640 - 258

The Seiko 5640-258 represents an important milestone in Seiko's 1982 lineup. It features a Green dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-f29be48429ab]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1982

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