Seiko Cal. 5645 - 720

The Seiko 5645-720 represents an important milestone in Seiko's 1994 lineup. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-151d711b41a6]

Also known as: Sea Horse, Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1994

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