Seiko Cal. 5640 - 372

The Seiko 5640-372 represents an important milestone in Seiko's 1998 lineup. It features a Black dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-b05cc82fd5f2]

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1998

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