Seiko Cal. 4577 - 726

This Spring Drive model from 1969 features a 38mm Titanium case. Powered by the 4577 caliber with 20j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-d9f5757a84aa]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1969

Related Models

• Seiko 5668-878
• Seiko 5281-942
• Seiko 5211-891
• Seiko 6677-263
• Seiko 7166-819
• Seiko 6226-514
• Seiko 4573-897
• Seiko 7184-185
• Seiko 4470-520
• Seiko 7124-695
• Seiko 6120-312
• Seiko 7087-606