New. Never used Bluetooth FM Transmitter,Wireless Radio Adapter Hands-Free Calling Car Kit QC3.0 and Smart Dual USB Port W 1.7” Display, Support USB Drive,AUX Input/Output, TF Card MP3 Player Pick up only Seriously buyer please See item location **** QC 3.0 smart quick charge and 5V / 2.4A Dual port, you will charge your devices faster and safer, because KM28 has built-in over-current protection, over-voltage protection, intelligent temperature control and short circuit protection.  Works well with most Bluetooth enabled devices, such as “iPhone, iPad, iPod, tablet and smart phones “etc.  The Bluetooth radio adapter with wide compatibility can support TF/ Micro SD card in FAT format up to 32G, A2DP, MP3/ WMA format and also AUX output/input.  The wireless receiver car kit features Bluetooth V4.2 which can save energy and last for much longer and EDR to ensure faster data transmission rate and more stable connection between a Bluetooth device and the audio receiver.  Specifications:  Bluetooth vision: V4.2+EDR  Bluetooth frequency: 2.4 GHZ  Sensitivity: -42 db+/3 db 360  Effective range: 5M  RF output: 4 dbm  FM: 87.5MHZ-108.0MHZ  Effective range: 2 M