Seiko Cal. 4423 - 306

Seiko 4423-306

The 4423-306 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-bc5c15f584de]

Also known as: Monster, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
12.7mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Silver
Jewels
17j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1987

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