Seiko Cal. 5645 - 439

The Seiko 5645-439 represents an important milestone in Seiko's 1996 lineup. It features a Black dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-5bdcc07cb3c6]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1996

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