Fm Transmitter Wireless Car Handsfree Bluetooth MP3 Music Player With Type-c Port QC3.0 PD3.0 PD Charging 3.1a Dual Display Description: Product Name:Car Bluetooth-compatible 1. Bluetooth-compatible version: 5.0 2. FM Frequency: 87.5 Mhz-108.0 Mhz 3. Bluetooth-compatible effective distance: 10m 4. QC3.0 output: 5V/3A, 9V/2A, 12V/1.5A 5. PD output: 5V/3A, 9V/3A, 12V/2.5A 6. Music port output: 5V/1A 7. Input voltage: 12V-24V 8. Support for U disk capacity: 32G MAX Power supply is unresponsive or does not display: 1. Check whether the machine is in good contact with the cigarette holder and whether the cigarette holder is seriously rusted. 2. Unplug and try again 3. Check whether the cigarette holder is powered normally Can Not Be Used: 1. Check if the USB device is connected to the player, or you can try another USB device. 2. Please make sure there is a copy of the file in the USB device that the product can support. 3. Make sure the volume is not set to 0 There Is Noise But No Sound: 1. Whether the product player is in a paused state 2. Is the volume set to 0 or low? Car Stereo Does Not Receive Sound: 1. Make sure the product FM boot is turned on. 2. Is the transmit frequency of the product the same as the receive frequency of the car? The launch effect is not good, there is noise: 1. Make sure that there are no strong signal stations on the current transmitting frequency. When using it, it is better to tune to the frequency without radio. Kind Tips: 1. Don't turn up the radio volume too high (usually 18 or below), so as not to increase the echo. 2. Although the transmit power of this product is relatively strong, it is better to skip the frequency with strong signal locally to obtain better sound quality 3. Do not use this product in dusty and humid environments with extremely high and low temperatures. 4. Do not drop the product to avoid surface damage or breakdown. 5. Do not disassemble the product by yourself. Features: 1. Auto connect. 2. Support for U disk to play music. 3. EQ sound can be adjusted. 4. Music lyrics are displayed synchronously. 5. Support breakpoint memory. Packing list: 1 x Car Bluetooth-compatible Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.