Seiko Cal. 5637 - 987

The Seiko 5637-987 represents an important milestone in Seiko's 1975 lineup. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-00bdf384ffbc]

Also known as: Rally, Arnie

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1975

Related Models

• Seiko 7077-605
• Seiko 6663-272
• Seiko 4565-429
• Seiko 6642-575
• Seiko 7015-804
• Seiko 0712-502
• Seiko 6133-478
• Seiko 4515-216
• Seiko 6667-451
• Seiko 6636-457
• Seiko 6122-201
• Seiko 6165-939