Men's GG-1000-1A5CR G Shock Analog-Digital Display Quartz Beige Watch

Whats the differnce between gg1000-1a5 & gg1000-1a5er & gg1000-1a5dr ?

Is this made in China?

How long the lifespan of the battery?

is the guarantee international? because i live in brazil and in case i need to use casio warranty, will it be possible?