They include embedded 16GB memory, large battery capacity of 1850mAh, NFC (Near Field Communication), WiFi a/b/g/n support, and Bluetooth 3.0+HS.

Bluetooth headsets, for example, combine the module and host portions of the stack on one processor because they need to be small and self-contained.

The headset profile describes how a Bluetooth enabled headset should communicate with a computer or other Bluetooth device (such as a mobile phone).