1. Plug-and-Play Bluetooth Audio Receiver: Multiple output interfaces (3.5mm AUX, Coaxial, Optical) enable easy Bluetooth connectivity for older audio devices. 2. Supports Bluetooth audio receiving mode with 3.5mm AUX, Coaxial, and Optical audio outputs; includes multi-device expansion capability for flexible setup. 3. Connects to legacy speakers or powered amplifiers via 3.5mm AUX, Coaxial, or Optical input—ideal for adding Bluetooth functionality to non-Bluetooth audio equipment. Compatible with a wide range of analog and digital audio amplifiers. Delivers strong, stable signal transmission with low latency and aptX-HD high-fidelity audio decoding. 4. aptX-HD technology delivers CD-quality sound with enhanced detail, clarity, and dynamic range. Enables wireless audio performance comparable to wired connections. 5. Equipped with Bluetooth 5.2 chip for stable, low-latency wireless transmission and improved audio signal restoration. Supports aptX, aptX-HD, SBC, and AAC codecs. Note: This is a Bluetooth audio receiver only—not a transmitter. Designed exclusively for audio playback; not compatible with keyboards, mice, or file transfer devices. Product Name: aptX-HD Bluetooth Audio Receiver Model: D300-HD Bluetooth Version: Qualcomm Bluetooth 5.2 Output Interfaces: 3.5mm AUX / Coaxial / Optical (only one output interface active at a time) Operating Range: Up to 15 meters Charging Port: USB-C Battery Capacity: 500 mAh Playback Time: Up to 10 hours Audio Codecs Supported: aptX, aptX-HD, SBC, AAC Operating Frequency: 2.4 GHz ISM band (2400–2483.5 MHz) Frequency Response: 20 Hz – 20 kHz Compatible Devices: Wired speakers, home stereo speakers, powered amplifiers, headphones, car audio systems, etc. Type: Bluetooth Audio Receiver