Seiko Cal. 4561 - 740

The Seiko 4561-740 represents an important milestone in Seiko's 1989 lineup. Powered by the 4561 caliber with 20j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-cc144da97134]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1989

Related Models

• Seiko 6643-839
• Seiko 4529-891
• Seiko 7157-349
• Seiko 5273-900
• Seiko 3877-652
• Seiko 0724-541
• Seiko 5658-131
• Seiko 7050-368
• Seiko 7094-699
• Seiko 3871-725
• Seiko 7133-554
• Seiko 6230-649