Seiko Cal. 4591 - 496

The Seiko 4591-496 represents an important milestone in Seiko's 1977 lineup. Powered by the 4591 caliber with 18j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-14dc605d8c74]

Also known as: Navigator, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1977

Related Models

• Seiko 6183-448
• Seiko 4432-316
• Seiko 3826-607
• Seiko 5677-265
• Seiko 7111-318
• Seiko 3831-351
• Seiko 5236-299
• Seiko 4524-492
• Seiko 0778-639
• Seiko 4587-974
• Seiko 6372-101
• Seiko 4485-281