This one does have the USB host so a dongle is an option but I can tell getting a BT unit to run is going to be a challenge, at least on the surface of things. I bought them almost exclusively for the purpose of being ereaders so I'm not too concerned but it would be nice to have a more power conserving ROM that integrates a Bluetooth driver.
I only paid $15 for it on # brand new for the 4gb version and then my wife decided she wanted one too that I paid $35 for but at least it had 6gb on board. Not enough sys apps running in nice mode I suspect. It helps with wifi off but it still gobbles power for the OS. It's a capable little budget unit but a serious battery hog, even with Wi-Fi turned off.
ProntoTec Axius Series 7 with Android 4.4.2 Firmware 4.4v2.0 Kernal 3.4.39 Might as well add the Allwinner Dualcore-A23 to the mix.