I'm not sure what the RAM size of Lenovo S860 is?

I'm not sure what the RAM size of Lenovo S860 is because I read from http://shop.lenovo.com/...ries/s860/ that it is 2GB RAM while as I'm about to buy it online they told me that it is 1GB RAM also some of these phone have to speakers and some do have one can someone please help me with genuine information