Looking for a bluetooth adapted for the iPod Classic 120gb

I'm looking for an adapted for my iPod classic 120gb, accessible in Australia (or can be shipped).

Ebay has multiple adapters but they all look like the shame Chinese model, which one seller states will not work with the 120gb model. I was not able to get a clear answer from the seller as to why, so I'm not really sure what the problem is and what I should be looking for.

Any advice would be great but not looking at the Kokkia models as they're 100$+ atm.

Thanks