3.1a Dual Usb Wireless Modulator Bluetooth Fast Charger Car Charger Car Fm Transmitter Car Accessories Handsfree Mp3 PlayerDescription:Features:After the car starts to ignite, it can display the current car battery voltagePlay songs in U disk and TF cardTransmit the audio and high-quality stereo music in the mobile phone to the car stereo through Bluetooth A2DP technologySupport HFP / HSP, OPP, A2DP / AVRCP, PBAP Bluetooth protocolWith voice prompt function such as incoming call voice report number, the incoming call number is displayed on the screenFM transmission frequency range: 87.5 ~ 108.0MhzBluetooth hands-free function, with DSP echo cancellation functionUSB interface can charge all kinds of mobile phones, with 2.5A charging currentWide voltage power supply 12V-24V, suitable for vehicles of various voltagesColour:BlackMaterial:ABSSize:8*4.7cmSpecifications: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