As negative points, a display which shows absolutely nothing but the basic information, it's sad!
Extremely limited functions, only one jack at the back for an external source.
One point that méchappe also is this habit that have wacky manufacturers to install the USB port on the front!
The application dedicated to iPhone Smartphone is very basic, not very pleasant.
And finally a red card on the remote control, I have rarely seen as of little help and functional.