ITEM NAME:Bluetooth Dual USB Car Charger MP3 Player FM Transmitter w/Wireless Headset #JT1 Product Description Description: Bluetooth Dual USB Car Charger Handsfree MP3 Player FM Transmitter Auto Kit with Wireless Headset Features: 1. Once you receive some private call when playing music during driving, just pick up the Bluetooth earbud and put into the ear. Of course, once you put it back into transmitter, it will end the call and continue the music automatically. 2. Dual USB Fast Charging & U Disk, With two USB ports (in total 3.1A), you can charge two devices simultaneously. Moreover, you could also choose one port to charge and another for U disk to play music. 3. Excellent Stereo Sound Quality, With the combination of DSP noise reduction technology and Bluetooth 4.2, you can enjoy both lossless High Definition phone call and music without being interrupted by the environmental noise. 4. Wide Compatibility, You are able to charge the Bluetooth headset by just placing it into the headphone slot or a micro charging cable. The enhanced Bluetooth chip makes it compatible with all Bluetooth enabled devices and 12V to 24V car series. Can connect two phones at the same time, no missing call ever since! 5. Pairing your phone and FM transmitter by Bluetooth. Tune your radio to an unused FM frequency, then match the FM transmitter and car FM radio at same frequency. Specification: Bluetooth Version: V4.1+EDR Bluetooth Sound Processing: Stereo - A2DP Working Voltage: 12V-24V Bluetooth Transmission Distance: 10-15m/32.81-49.21ft Voltage Limit: 9V-30V Microphone Effective Distance: 0.5-2m/1.64-6.56ft FM Transmitter: 87.5~108.0MHz Dual USB Output: 5V/3.1A FM Mode: Stereo Digital PLL Frequency Lock Play Format: MP3/WMA/WAV/FLAC Working Temperature: -10~70Â °C Color: Black Silver Size: - Main Body: 90 X 65 X 43mm/3.54 X 2.56 X 1.69" - Headphones: 48 X 30 X 12mm/1.89 X 1.18 X 0.47" Notes: 1. Due to the different monitor and light effect, the actual color of the item might be sligh.Pairing your phone and FM transmitter by Bluetooth. The enhanced Bluetooth chip makes it compatible with all Bluetooth enabled devices and 12V to 24V car series. Of course, once you put it back into transmitter, it will end the call and continue the music automatically.