Seiko Cal. 4421 - 750

Seiko 4421-750

The 4421-750 is a sought-after Quartz piece from Seiko's golden era. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-ba4305e80e9e]

Also known as: Navigator, Baby Tuna

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
36mm
Case Thickness
9.0mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
Green
Jewels
36j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1975

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