High Quality Panerai Replica Watches for sale

When Guido Panerai, grandson of brand founder Giovanni Panerai, secured a contract with the Italian Navy to provide luminescent equipment, Officine Panerai moved from being just a manufacturer of diving instruments to becoming one of the most influential watchmakers in the world. The company's prized invention was a zinc sulphide and radium bromide concoction which they patented as 'Radiomir'. The radium, a radioactive substance that releases alpha and gamma rays as it decays, reacted with the zinc sulphide in such a way that made it glow. The company used its radium-based luminescent paint on various devices such as night-sights, compasses, depth gauges and calculators.