Seiko Cal. 6660 - 583

The Seiko 6660-583 represents an important milestone in Seiko's 1967 lineup. Powered by the 6660 caliber with 25j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-8b29af7765ae]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1967

Related Models

• Seiko 4580-288
• Seiko 6622-766
• Seiko 7114-906
• Seiko 7090-311
• Seiko 0790-277
• Seiko 6654-597
• Seiko 0740-980
• Seiko 5620-967
• Seiko 7074-731
• Seiko 4552-946
• Seiko 0787-956
• Seiko 5254-483