Seiko Cal. 4421 - 556

Seiko 4421-556

The 4421-556 is a sought-after Solar piece from Seiko's golden era. Powered by the 4421 caliber with 27j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-ca74c925c1cb]

Also known as: Monster, Baby Tuna

Specifications

Movement
Solar
Case Material
Titanium
Case Width
39mm
Case Thickness
8.0mm
Lug Width
22mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
140m
Dial Color
Black
Jewels
27j
Frequency
36,000 bph
Power Reserve
52 hours
Year
1982

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