How to use SD Card Sound Recording WTR010 Module?

I have got this product, but this module is unable to initialize the memory card. Can anyone help me, I am unable to use this module. I have 1gb memory card by the module is not able to recognise this. Do I have to buy a class 10 sd card?

It would be helpful to include a link to the data sheet for the module that you have so people don't have to search for it to help you and we know that we are looking at the same module.

groundfungus:
It would be helpful to include a link to the data sheet for the module that you have so people don't have to search for it to help you and we know that we are looking at the same module.

here the link of the datasheet of the module, I have ordered two sound recording module, but none of them is recognizing the sd card.