Seiko Cal. 4448 - 556

The 4448-556 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4448 caliber with 17j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-e9c9607dffc2]

Also known as: Shogun, Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1985

Related Models

• Seiko 5217-536
• Seiko 3819-511
• Seiko 6621-143
• Seiko 6663-800
• Seiko 4516-767
• Seiko 6125-179
• Seiko 6638-943
• Seiko 6311-765
• Seiko 0748-538
• Seiko 4460-644
• Seiko 7134-278
• Seiko 4475-949