Seiko Cal. 4428 - 449

The Seiko 4428-449 represents an important milestone in Seiko's 1990 lineup. Powered by the 4428 caliber with 31j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-43276a561f94]

Also known as: Helmet, Goldfeather

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1990

Related Models

• Seiko 0725-986
• Seiko 6312-412
• Seiko 0759-450
• Seiko 6323-471
• Seiko 4511-341
• Seiko 6270-632
• Seiko 4484-954
• Seiko 4535-806
• Seiko 0710-160
• Seiko 7048-611
• Seiko 3887-672
• Seiko 7135-965