What is size of Curie's EEPROM

I know Curie's EEPROM is emulated by Using Flash,but what is size of Curie's EEPROM?

in the curieEEPROM lib,i see:

define EEPROM_OFFSET 0x00001000

it means 4KB? but the EEPROM lib page in arduino.cc(http://www.arduino.cc/en/Reference/EEPROM), it shows the size is 1KB but,yes,how many "but",the examples writen,512 times writing,write&read function,one time operation,it will write or read 4byte,that is to say, the size is 2KB.

i will write a tutorial by chinese on arduino.cn,so i need a right info.

thanks for your help.