Seiko Cal. 4421 - 257

Seiko 4421-257

The 4421-257 is a sought-after Kinetic piece from Seiko's golden era. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-df23a6ef5f99]

Also known as: Bullhead, Sea Horse

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
40mm
Case Thickness
10.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
190m
Dial Color
Champagne
Jewels
35j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1980

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