Azio USB Micro Bluetooth Adapter V4.0 EDR and aptX (BTD-V401) A2DP with aptX support Bluetooth version 4.0 + EDR Low energy consumption protocols Ultra-Compact design Operating distance: Up to 33 feet A2DP with aptX support Bluetooth version 4.0 + EDR Low energy consumption protocols Ultra-Compact design Operating distance: Up to 33 feet Transfer rate: up to 3 Mbps Bluetooth profiles: A2DP (w/ aptX), GAP, SPP, DUN, FAX, LAP, OPP, FTP, HSP, AVRCP, SYNCH