DO NOT waste your money buying through AliExpress. As there is no real protection. I bought an item from them, it was defective. The seller cannot speak or write English his comments were absolutely stupid. I contacted Ali Express and they told me Ill have to wait until the seller accepts my complaint. After waiting for a solution I have been told I have to send it back within 9 days at my own expense with a tracking number or my payment will be release to the buyer. I received this message on a Saturday, the post office will not be open until Monday although it can take over four weeks for a delivery from China.
The Item in question was a car camera recorder that was completely rubbish.
I suggest you do not buy through AliExpress unless you want to lose your money.