DR-7400 powered by the P4dragon engine . PACTOR 4 installed with full operation of PIII, II, I. Quad core DSP, Transceiver frequency control, VHF/UHF Packet operation (software upgrade required). USB interface standard, Bluetooth optional. 1 year warranty. English manual, cables/connectors and CD-ROM included. You can add Class 1 BlueTooth (BLUE) wireless to this standard (STD) USB model for a wireless connection to your computer (DR-7403 Bluetooth).