Seiko Cal. 4550 - 322

The 4550-322 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4550 caliber with 19j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-0d40051a6eab]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1971

Related Models

• Seiko 7115-927
• Seiko 6615-479
• Seiko 7038-948
• Seiko 3815-855
• Seiko 0779-461
• Seiko 6246-324
• Seiko 6212-766
• Seiko 6398-319
• Seiko 6228-944
• Seiko 6112-778
• Seiko 7123-731
• Seiko 6116-775