Seiko Cal. 6628 - 904

Seiko 6628-904

The 6628-904 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-2d9d23f67cfb]

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
14.5mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Navy
Jewels
33j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1972

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