Welcome to the store! Adopt Bluetooth V5.0, support Bluetooth hands-free calls, convenient to use. Dual display digital tube display, beautiful and clear, and support colorful lights. Features voice assistant function. Support QC3.0 fast charging and PD fast charging. Support one-button soft shutdown, support any button to start, easy to operate. With battery voltage detection and automatic power-off memory function. Support stereo FM transmission technology and support DSP technology. Support U disk music player, support TF card music player. Support WMA, MP3, WAV, FLAC music format files, support A2DP, AVRCP, HFP, HSP. Item Type: MP3 Player Material: ABS Color: As the Picture Shows Rated Working Voltage: 12V-24V Limit Working Voltage: 10-26V PD Output: 18W USB Output: 5W+18W Working Temperature: 0-50℃ Music Format Support: MP3 / WMA / WAV/ FLAC SNR: >60dB Battery Voltage Error: ±0.5V USB1: U-Disk /5V/1A USB2: QC3.0(3.6V-12V) Bluetooth Version: Version 5.0 Bluetooth Audio Processing: for DSP and A2DP(Advance Audio Distribution Profiles) Bluetooth Transmission Distance: <10M/32.8ft MIC Effective Distance: Approx. 0.5-2M/1.6-6.6ft FM Frequency: 87.5-108Mhz FM Transmission Mode: Stereo digital for PLL lock frequency 1 x MP3 Player 1 x English Manual Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!