Seiko Cal. 5637 - 670

This Hand-Winding model from 1973 features a 43mm Gold-Plated case. Powered by the 5637 caliber with 24j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-e182fc72f397]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

24j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1973

Related Models

• Seiko 6310-389
• Seiko 6387-517
• Seiko 0773-484
• Seiko 7090-408
• Seiko 6239-579
• Seiko 4515-263
• Seiko 4453-813
• Seiko 6385-466
• Seiko 7113-724
• Seiko 3833-328
• Seiko 7060-272
• Seiko 3851-531