EQ subwoofer one-button adjustment, one-button switching subwoofer mode to car audio quality. Built-in high-performance decoding module, with Bluetooth 5.0 lossless transmission, high-resolution high-performance stereo sound, the sound quality is more shocking. Bluetooth 5.0 MCU+DSP dual-core processor, intelligent noise reduction, no noise, more stable. Colorful breathing atmosphere light, seven-color light self-adjustment. Compatible with various of U disk, just adjust the car radio frequency and Bluetooth MP3 to be . Input: 12-24V Output: 5V-1.5a or 5V-3.1A C port: 9V-2A power: 7.5-20W Output port type: USB, Type-c Protocol: Bluetooth 5.0 Hardware functions: FM transmitter, Bluetooth, USB charging, reading U disk, TF/color light, EQ function Type: Vehicle Transmitter Colour: Black Material: ABS Package Contents: 1 * Transmitter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.