Product Details : Bluetooth Car Kit Stereo Handsfree Speakerphone hands free Bluetooth Transmitter USB Car Charger Support TF Card MP3 Player FM Features: This device is a bluetooth MP3 Player developed for in car used, it equips with professional high-performance bluetooth module and MP3 decoder chip. It can play and transmit the music from TF card to car stereo via FM radio signal. It can transmit the music from your mobile to car stereo via bluetooth. It can be used as a hands-free car kit during the driving via bluetooth. This device transmit signal by wireless method, no need to modify anything in car. It can be used both as the music player in entertainment purpose or hands-free car kit for the safety driving purpose. Speacification: Type: FM Transmitter Input Voltage: 12 - 24V Output Voltage: 5V /- 0.25 Output Current: 1000mA (Max) Bluetooth: Bluetooth Version: V3.0 EDR Frequency: 20h - 20KHZ Sensitivity: -42db / 3 db 360 Voltage: 5V /- 0.5 Working Current: 45mA (Max) Stand-by Current: 25mA (Max) Frequency: 2.402 - 2.480ghz Effective Range: 5meters Sensitivity: -92dBm RF Output: 4dBm Frequencies: FM: 87.5MHZ - 108.0MHZ Transmitted Power: 87dBuv / 107dBuv Effective Range: 2meters Package Included: 1 x x5 car kit 1 x User Manual.