Q4 2-in-1 TX/RX Adapter Bluetooth 5.3 Car MP3 Player with Light •Versatile Functionality: The Q4 car MP3 player offers a 2-in-1 feature with both Bluetooth transmission (TX) and reception (RX) modes,as well as TF card music playback •Advanced Bluetooth Technology: Featuring Bluetooth version 5.3 for enhanced connectivity and performance •Wide Compatibility: Suitable for various applications,including computers,televisions,projectors (in transmission mode),speakers,headphones,and vehicles (in reception mode) •AUX Interface: Equipped with an AUX interface for flexible audio input options •Long-lasting Battery: With a built-in 300mAh battery and protective circuitry,enjoy up to 6 hours of continuous music playback •Specifications: •Chip: JL •Bluetooth Transmission Power: 7dBm •Output Impedance: 32Ω •Frequency Response: 20Hz - 20KHz •Signal-to-Noise Ratio: 90dB •Microphone Sensitivity: -42dB •Bluetooth Reception Range: ≥10 meters •FM Transmission Range: ≥2 meters •TF Card Playback: Supports MP3/WAV formats with automatic power-off memory function,up to 32GB cards •Input: 5V/2.1A •Battery Capacity: 300mAh •Charging Time: About 2 hours •Music Playback Time: About 6 hours Package included: •1 x Bluetooth Adapter •1 x English User Manual •1 x Charging Cable •1 x 3.5mm Audio Head •Other items not included