Hands-Free Profile (HFP): Allows car hands-free kits to communicate with mobile phones in the car. Be advised that not all cars can pair with all phone models due to some car manufacturer restrictions.
Object Push Profile (OPP): Provides connection to send "objects" such as pictures, virtual business cards, or appointments details.
Service Discovery Application Profile (SDAP): SDAP describes how an application should use SDP to discover services on a remote device. SDAP requires that any application be able to find out what services are available on any Bluetooth enabled device it connects to.