Seiko Cal. 4447 - 728

The Seiko 4447-728 represents an important milestone in Seiko's 1975 lineup. Powered by the 4447 caliber with 23j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-521957e1aa39]

Also known as: Pogue

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1975

Related Models

• Seiko 6696-868
• Seiko 7175-120
• Seiko 3814-141
• Seiko 6619-769
• Seiko 6345-219
• Seiko 4590-123
• Seiko 6311-536
• Seiko 4588-496
• Seiko 5261-684
• Seiko 7041-154
• Seiko 6353-138
• Seiko 7010-613