Seiko Cal. 5640 - 327

The Seiko 5640-327 represents an important milestone in Seiko's 1994 lineup. It features a Black dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-e9a514785703]

Also known as: Turtle, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1994

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