Seiko Cal. 5639 - 590

The 5639-590 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5639 caliber with 21j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-43dfe7a7203e]

Also known as: Monster, Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1975

Related Models

• Seiko 7131-796
• Seiko 6369-308
• Seiko 7022-594
• Seiko 6136-937
• Seiko 6130-158
• Seiko 7177-121
• Seiko 4518-897
• Seiko 7023-932
• Seiko 4548-191
• Seiko 6234-888
• Seiko 0798-561
• Seiko 6638-423