Seiko Cal. 4448 - 556

Seiko 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

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