Seiko Cal. 4581 - 666

The Seiko 4581-666 represents an important milestone in Seiko's 1969 lineup. Powered by the 4581 caliber with 36j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-0e8e8094180b]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1969

Related Models

• Seiko 6613-332
• Seiko 3857-623
• Seiko 7177-309
• Seiko 0774-664
• Seiko 5699-653
• Seiko 0716-598
• Seiko 6329-567
• Seiko 6316-649
• Seiko 6396-764
• Seiko 4522-583
• Seiko 6341-468
• Seiko 6116-517