Seiko Cal. 6624 - 721

Seiko 6624-721

The 6624-721 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6624 caliber with 30j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-7d0d6b1252e5]

Also known as: Navigator, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
8.5mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
30m
Dial Color
Blue Sunburst
Jewels
30j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1969

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