Seiko Cal. 5637 - 657

The Seiko 5637-657 represents an important milestone in Seiko's 1999 lineup. It features a Silver dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-f4549eb15613]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1999

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