Seiko Cal. 4581 - 938

The Seiko 4581-938 represents an important milestone in Seiko's 1965 lineup. Powered by the 4581 caliber with 30j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-ef6eefe803e0]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1965

Related Models

• Seiko 6276-185
• Seiko 3833-852
• Seiko 0746-974
• Seiko 4552-913
• Seiko 6270-513
• Seiko 6627-735
• Seiko 4498-567
• Seiko 4482-543
• Seiko 6123-161
• Seiko 4448-712
• Seiko 0737-106
• Seiko 4544-519