Seiko Cal. 5637 - 140

Released in 1990, the Cal. 5637 with design code 140 was part of Seiko's domestic market collection. It features a Silver dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-d03ff29adab4]

Also known as: Bullhead, World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1990

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