Seiko Cal. 6630 - 428

Seiko 6630-428

The 6630-428 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-2f8c6e8ffa5c]

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
15.7mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Silver
Jewels
30j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1969

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