Seiko Cal. 4577 - 540

The Seiko 4577-540 represents an important milestone in Seiko's 1972 lineup. It features a Silver dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-604359e83080]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1972

Related Models

• Seiko 4428-639
• Seiko 6635-927
• Seiko 6280-963
• Seiko 7133-552
• Seiko 6138-986
• Seiko 6324-969
• Seiko 4426-423
• Seiko 7162-787
• Seiko 5240-740
• Seiko 3878-799
• Seiko 6130-819
• Seiko 6326-892