This FM transmitter has a guided backlight with 7 colors, which can be seen more easily in the dark, making your car interior layout cooler and more attractive. Built-in high-performance decoding module, with Bluetooth 5.0, lossless transmission, high-resolution high-performance stereo sound, the sound quality is more shocking. Power-off memory playback function, automatically reconnect and memorize the frequency when the power is turned on, and after the song is powered off and restarted, it will start playing from the first sentence of the song that was disconnected. PD fast charging technology, support Apple fast charging. Dual USB interface design, listening to music and charging, supports fast charging of Samsung, Xiaomi, Huawei, Apple and other smart phones. QC3.0 fast charging technology, charging efficiency increased by 80%. Note: PD fast charging needs to be equipped with PD fast charging cable (self-prepared). Built-in intelligent identification chip, high-efficiency power conversion, reducing power loss without loss. Built-in microphone, clear and smooth calls, one-key hands-free driving is safer. Compatible with APP voice assistant, one-button Bluetooth connection, more accurate voice broadcast. Adopting digital display design, it can detect and display the car battery voltage after power on. Increase the buckle area and lengthen the anti-slip shrapnel on both sides, the buckle is stable and can be charged continuously without fear of bumpy mountain roads. Working Voltage: 10V~26V USB1 Output: 5V/1A USB2 Output: PD/QC3.0/3.1A Support Music Format: MP3/WMA/WAV/FLAC/APE Support U Disk Capacity: max 32G TF Card: not supported Working Temperature: 60dB Distortion: 60dB Bluetooth Version: Version 5.0 Bluetooth Transmission Distance: less than 10M Bluetooth Microphone Effective Distance: 0.5-2M Material: ABS Color: Black Size: 13 x 6.8 x 4.8cm Weight: 60g Package List: 1 x Car Fm Transmitter