Seiko Cal. 5661 - 958

The Seiko 5661-958 represents an important milestone in Seiko's 1968 lineup. Powered by the 5661 caliber with 24j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-2d0fbdcc34e7]

Also known as: Bullhead, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

24j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1968

Related Models

• Seiko 4473-829
• Seiko 0739-828
• Seiko 4443-806
• Seiko 6232-871
• Seiko 6253-380
• Seiko 5285-947
• Seiko 6628-306
• Seiko 3837-273
• Seiko 7199-769
• Seiko 7019-446
• Seiko 5697-133
• Seiko 4427-498