Treo 650, based on VoiceSignal's voice recognition system. The application, which requires approximately 1 MB of RAM, supports speaker-independent voice recognition for all entries in the Treo's Contacts list as well as digit-dial. It can be activated via the auxiliary button on the side of the Treo or by the call button on the included wired handset. At the moment activation by a Bluetooth headset is not available, but VoiceSignal's application does support it and the company says an update to support Bluetooth voice dialing is on its way.">