Features 1. 2-in-1 Adapter: Sleek design. Uses Bluetooth-compatible 5.0 chip design, strong compatibility and stability. Bluetooth-compatible receiver (RX), Bluetooth-compatible transmitter (TX) 2-in-1 design, switch quickly with a toggle. 2. LED Digital Display: Equipped with HD LED digital display, working status and Bluetooth-compatible mode are clearly visible. Built-in digital-to-analog chip, supports 6 signal interfaces for digital optical fiber, coaxial, AUX, RCA, USB, and memory card. 3. NFC Functionality: Upgraded NFC functionality, phone can connect with a button press. Cool breathing light, red-blue color, soft and non-blinding. Supported formats: MP3/WAV/WMA/APE/FLAC/G729/M4A/ALAC/AMR/DTS/MIDI/G726/MTY. 4. Rechargeable Lithium Battery: Built-in 500mAh rechargeable lithium battery, long battery life. Supports USB (flash drive), memory card playback and transfer. Supports 5-8m / 16-26ft infrared remote control, all types of functions are easily accessible. 5. Compatible Devices: For Android, iOS system phones and PADs, active speakers, audio amplifiers, and Bluetooth speakers or earphones supporting A2DP protocol are connected for use. Built-in HD microphone, supports wireless music playback, hands-free calls, navigation. Specifications Product Type: Bluetooth Transmitter/Receiver Material: Plastic Model: M8 Bluetooth Version: Bluetooth V5.0 Supported Protocols: RX: A2DP AVRC TX: A2DP Operating Frequency: 2,402 GHz -2,480 GHz Power Class: Class II Sensitivity: -85dBm<0,1%BER Signal-to-Noise Ratio: ≥90dB Distortion: ≤0,1% Interface Type Input: 3,5 mm AUX+RCA+Optical+Coaxial+USB+Memory Card Interface Output: 3,5 mm AUX+RCA Supported Formats: MP3/WAV/WMA/APE/FLAC/G729/M4A/ALAC/AMR/DTS/MIDI/G726/MTY Screen Size: Approximately 32x14,5x7mm / 1,26x0,57x0,27in Operating Current: <40mA Built-in Battery: 500mAh lithium battery (included) Remote Control Battery: 1 x CR2025 Charging Current: Approximately 500mA Charging Time: Approximately 1.5 hours Battery Life: RX approximately 10H, TX approximately 8H Bluetooth Range: ≤10m-15m / 33ft-49ft (open space) Charging Method: Type-C 5V-0.5A Compatible Devices: For Android, iOS system phones and PADs, active speakers, audio amplifiers, and Bluetooth speakers or earphones supporting A2DP protocol are connected for use. Package Contents 1 x Bluetooth-compatible adapter 1 x Type C charging cable 1 x 3,5 mm AUX cable 1 x Red and white RCA cable 1 x English manual 1 x Remote control