Seiko Cal. 4539 - 561

The Seiko 4539-561 represents an important milestone in Seiko's 1967 lineup. Powered by the 4539 caliber with 22j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-2936cb44aef7]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1967

Related Models

• Seiko 6125-343
• Seiko 5630-430
• Seiko 0724-758
• Seiko 6648-555
• Seiko 7011-336
• Seiko 6189-907
• Seiko 0772-821
• Seiko 6352-691
• Seiko 4454-990
• Seiko 7157-893
• Seiko 6396-945
• Seiko 6389-154