Seiko Cal. 5639 - 487

The 5639-487 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-7e8c0974981a]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1973

Related Models

• Seiko 6142-282
• Seiko 6249-552
• Seiko 4466-271
• Seiko 7082-830
• Seiko 0750-682
• Seiko 3814-813
• Seiko 7152-166
• Seiko 4446-517
• Seiko 0757-968
• Seiko 6617-200
• Seiko 6140-388
• Seiko 7194-553