Specs:
For GROM-USB, GROM-IPD3 and GROM-AUX3 interfaces
Plugs directly to the extension port of GROM box
Gives wireless handsfree calling (accept/reject call)
Allows for wireless A2DP playback with AVRCP control
Compatible with large number of phones
Plug and play

Specs:
For GROM-IPD2, GROM-IPD1, GROM-IPD3 adapters
Plugs directly to the MiniDin port
Gives wireless handsfree calling (accept/reject call)
Allows for wireless A2DP playback with AVRCP control
Compatible with large number of phones
Plug and play