Seiko Cal. 4421 - 494

Seiko 4421-494

The 4421-494 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-6e2ca81f619f]

Also known as: Tuna, Helmet

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
40mm
Case Thickness
15.9mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Green
Jewels
25j
Frequency
36,000 bph
Power Reserve
36 hours
Year
1973

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