Seiko Cal. 4550 - 320

The Seiko 4550-320 represents an important milestone in Seiko's 1979 lineup. Powered by the 4550 caliber with 17j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-9967458c00a1]

Also known as: Goldfeather, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1979

Related Models

• Seiko 5228-756
• Seiko 4456-413
• Seiko 7155-635
• Seiko 4584-840
• Seiko 7093-746
• Seiko 7088-975
• Seiko 4547-208
• Seiko 7083-468
• Seiko 3877-354
• Seiko 6227-529
• Seiko 3883-125
• Seiko 6215-340