Integrated Bluetooth modules have become a standard, and thus we can avoid speaking about it. Here it is 1.2 and the following profiles are supported: Basic Printing Profile, Generic Access Profile, Serial Port Profile, Dial-up Networking Profile, Headset Profile, Handsfree Profile, Generic Object Exchange Profile, Object Push Profile, File Transfer Profile, Basic Imaging Profile, SIM Access profile and Human Interface Device Profile. Several connections at the same time are supported. The main disadvantage is the absence of A2DP profile (Bluetooth stereo).