Handsfree Mp3 Player 3.1a Dual Usb Fast Charger Wireless Modulator Bluetooth Car Fm Transmitter Car Accessories Car Charger Description: Features: After the car starts to ignite, it can display the current car battery voltage Play songs in U disk and TF card Transmit the audio and high-quality stereo music in the mobile phone to the car stereo through Bluetooth A2DP technology Support HFP / HSP, OPP, A2DP / AVRCP, PBAP Bluetooth protocol With voice prompt function such as incoming call voice report number, the incoming call number is displayed on the screen FM transmission frequency range: 87.5 ~ 108.0Mhz Bluetooth hands-free function, with DSP echo cancellation function USB interface can charge all kinds of mobile phones, with 2.5A charging current Wide voltage power supply 12V-24V, suitable for vehicles of various voltages Colour:Black Material:ABS Size:8*4.7cm Specifications: 1. The product has a TF card inserted, supports TF memory card to play music, 2. The product has a USB port, supports U disk memory to play music, 3. The product has Bluetooth function, supports mobile phone connection to Bluetooth to play music in the mobile phone, 4. Support mobile phone navigation voice broadcast, 5. Support hands-free phone calls (no need to hold a mobile phone to talk while driving, the sound is played from the car audio. You only need to drive with both hands, sit and talk, and the other party can hear your voice clearly) Package Included: 1*Charger