Description [Deep bass music and HD sound quality] Bass design, just press the bass button EQ , you can enjoy the deep bass music in your car whenever you want, this which makes you more comfortable when driving. 3 music play modes, via bluetooth, U Disk (max. 32G), Micro SD card (max. 32G), HD sound quality, travel is no longer boring. [7 colors backlit and 1.4 inch LED display] With 7 colors of LED backlight including red / green / blue / yellow / purple / cyan / white, long press light button , in which 7 colors are displayed alternately. In addition, a 1.4 inch LED screen creates stunning visual effects which are very convenient to watch. [3 charging interfaces and PD3.0 fast charging] Bluetooth FM transmitter with PD3.0 type C port, the PD supports 18W fast charging function. Charging speed is 70% faster than normal . USB charging ports: PD / 18W, 5V / 2.4A, 5V / 2.4A Max (U hard disk port). You can charge 3 devices at the same time, which is quite convenient. [Speaker with microphone] Support A2DP, built-in excellent microphone with noise canceling technology (CVC), available to make clear calls, ensure driving safety. Support for answering / hanging up / rejecting / redialing calls; Long press Speaker button to activate Siri / Google voice assistant. [Bluetooth V5.0 connection] It has Bluetooth V5.0, also compatible with V1.2 / 2.0 / 2.1 / V3.0 / 4.0 / V4.1 / V4.2, provides more stable connection. Specifications FM tuning range: 87.5 ~ 108MHz Support audio format: MP3 / WMA / WAV / FLAC Bluetooth protocol support: A2DP / AVRCP / HFP / HSP USB 1: Support PD3.0 fast charge (max. 18W) USB 2: 5 V / 2.4 A USB 3: 5 V / 2.4 A Music Playback Types: U Disk (max 32G) / Micro SD Card (max 32G) / Bluetooth Wonderful deep bass music ( EQ button)It is so nice to enjoy favorite music especially listening to deep bass auto music while driving which is so cool and exciting. This bluetooth FM transmitter can help achieve deep bass effect, stimulate your nerves. Beloved car with cool music, help you drive more. Automatic voltage monitoring Auto detection of vehicle voltage and displayed on the LED screen helps you know the voltage status of the car. Below 12 V: dangerous voltage range, the battery must be replaced. Hands-free kit with microphone Support A2DP, built-in excellent microphone with noise canceling technology (CVC), available to make clear calls, ensure driving safety. Support for answering / hanging up / rejecting / redialing calls