1Dual fast charging QC3.0, PD18W, synchronized mobile phone time, 24H time display, very userfriendly design. 2Onebutton heavy bass, directional microphone noise reduction (suppressing road noise), giving you clear sound quality. 3The Bluetooth version supports bluetooth V5.0, and supports A2DP, AVRCP, HFP, HSP. 4Support button to wake up the mobile phone voice assistant, support poweroff memory, support Bluetooth connection. 5Plug the audio cable into the AUX hole for audio output, and plug the oneway microphone into the AUX hole for call audio reception. 6Multiple protection, input overvoltage protection, output overcurrent protection, output shortcircuit protection, overtemperature protection. Item Type: CarBluetoothCharger Material: ABS Cable Length: Approx. 1050mm/41.34in Colour: Black Rated Working Voltage: 12V-24V Orange USB: QC3.0 (Maximum 18W) Type-C: PD3.0 (Maximum 18W) Working Temperature: 0-50 Support Playback Format: MP3 / WMA / WAV / FLAC Signal to Noise Ratio: >60dB Battery Voltage Error: 0.5V Bluetooth Version: Version 5.0 Bluetooth Sound Processing: With DSP Technology and A2DP (Advance Audio Distribution Profile) Function Bluetooth Transmission Distance: Approx. 10m/10.94yd Bluetooth Microphone Effective Distance: Approx. 0.5-2m/0.55-2.19yd FM Transmitting Frequency: 87.5-108Mhz Transmit FM Mode: Stereo Digital PLL Frequency Lock Time Display Error: Deviation Less Than 2 Seconds TYPE-C Interface PD: 18W USB Interface QC 3.0 Installation Instructions: No Other Driversare Needed, Plug and Play 1 xCarBluetoothCharger 1 x Audio Wire Harness 1 x Microphone 1 x Manual