Seiko Cal. 4577 - 440

The Seiko 4577-440 represents an important milestone in Seiko's 1972 lineup. With its 22mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-a87b9be97a4e]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1972

Related Models

• Seiko 6374-490
• Seiko 5669-992
• Seiko 4563-166
• Seiko 6152-217
• Seiko 4496-383
• Seiko 7146-247
• Seiko 6657-423
• Seiko 0717-427
• Seiko 6198-773
• Seiko 6141-450
• Seiko 4450-434
• Seiko 4556-685