Seiko Cal. 4591 - 861

The Seiko 4591-861 represents an important milestone in Seiko's 1999 lineup. Powered by the 4591 caliber with 29j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-6a6644c3454a]

Also known as: UFO, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1999

Related Models

• Seiko 6276-586
• Seiko 4436-714
• Seiko 7137-453
• Seiko 6214-355
• Seiko 5232-651
• Seiko 6210-575
• Seiko 7179-458
• Seiko 4581-768
• Seiko 7145-868
• Seiko 6654-132
• Seiko 0792-219
• Seiko 5632-373