Seiko Cal. 5634 - 538

The 5634-538 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-f2f9adf8e4d1]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1980

Related Models

• Seiko 4459-490
• Seiko 0730-881
• Seiko 6339-960
• Seiko 4582-658
• Seiko 7166-626
• Seiko 7077-206
• Seiko 6351-745
• Seiko 0725-913
• Seiko 5675-971
• Seiko 5231-143
• Seiko 5654-998
• Seiko 7081-125