Features: 1. Upgraded Bluetooth audio receiver, Bluetooth 5.2 chip, compatible with most smartphones. 2. Digital-to-Analog Converter, with coaxial input, 3.5mm audio + R/L output. Use it on your TV; connect it to an amplifier or player to play audio. 3. U-disk playback, supports MP3.WAV, FLAC, APE, WMA music formats. Supports up to a 64GB memory card. 4. With microphone input; an external microphone can be connected to the speaker and used for singing. 5. Supports IR remote control, freeing your hands and making use more convenient (Note: it does not support Power ON via remote control). Product Specifications: Product Name: Multifunctional Bluetooth Audio Receiver Product Model: A1 Bluetooth Version: V5.2 (QDID:181186) Support Protocols: RX:A2DP/AVRC Frequency Range: 2400-2483.5MHz Sensitivity: -90.5dBm @ Transmission Distance: Barrier-free approx. 10m Signal-to-Noise Ratio: ≥90db Audio Interface: Supports flexible audio EQ adjustment; supports sampling frequencies of 8, 11.025, 12, 16, 22.05, 32, 44.1, and 48KHz Reception Mode: Connect the wired device audio playback device to receive the Bluetooth signal for wireless playback Product Functions: Receive/Coaxial Input/MIC Input/AUX Output/RAC Output/USB Disk Usage Method: Supports IR remote control, easy to use U-disk Playback: Supports MP3.WAV, FLAC, APE, WMA music formats. Supports up to a 64GB memory card. Power Supply Mode: Type-C interface Input Parameters: DC 5V ≥500mA Battery: No built-in battery Color: Black Material: Aluminum Alloy Package Contents: 1 * Bluetooth Converter 1 * 3.5mm Audio Cable 1 * Audio Cable 1 * USB Charging Cable 1 * IR Remote Control