Seiko Cal. 5644 - 257

The Seiko 5644-257 represents an important milestone in Seiko's 1998 lineup. It features a Navy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-85a9ebfdc53a]

Also known as: Flighty

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1998

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