One reason to make your G-Shock purchase at an authorized Casio retailer is the inclusion of a 1-year limited warranty. Gshock.com says to register your G-Shock product purchased from an authorized Casio reseller at Casio.com to “qualify to receive an additional twelve months on your one year manufacturer’s limited warranty.” This will effectively give you a two-year warranty. G-Shock also says to always retain your bill of sale.
Other reasons to register, according to Casio, include to make it easier to resolve customer support calls and to get the inside scoop on special offers and promotions.
For a list of authorized resellers in the U.S. that we recommend, see Where To Buy Casio G-Shock Watches.