Bluetooth 5.0 Receiver Adapter Stereo Wireless 3.5mm AUX To RCA 3D Audio Button Exquisite appearance and portable size. Adopting Bluetooth 5.0 chip design with stronger compatibility and stability. 2 in 1 Bluetooth receiving (RX) and Bluetooth transmitting (TX) functions. Innovative compass volume key design, 360-degree adjustable, more convenient rotating operation, easy to answer calls, play songs, pause, etc. Equipped with high-definition LED digital display screen, the working status and Bluetooth mode are clearly visible. Lossless music, HiFi high-definition decoding output, no lag delay, clear sound quality, restore sound details, just like a music scene. Built-in digital to analog chip, support AUX, RCA, USB, TF interface. Cool breathing light, red/blue color, soft and not dazzling. Built-in 400mAh rechargeable lithium battery, long battery life. Support USB (U disk), TF card playback and transmit. Built-in high-definition microphone, support wireless listening to songs, hands-free calling, and GPS navigation. The product connection is simple, without installing any cumbersome USB drivers and downloading APP; Broad Compatibility: With the included 3.5mm and RCA cables, the multifunctional Receiver Transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, car stereo etc. Specifications: Bluetooth version: Bluetooth V5.0 Supported protocols: RX: A2DP AVRC TX: A2DP Working frequency band: 2.402GHz -2.480GHz Power class: Power class 2 (Class II) Sensitivity: -85dBm<0.1%BER Signal-to-noise ratio: ≥90dB Distortion: ≤0.1% Interface type: Input: 3.5mm AUX+RCA+USB+TF; Output: 3.5mm AUX+RCA Supported formats: MP3/WAV/WMA/APE/FLAC/G729/M4A/ALAC/AMR/DTS/MIDI/G726/MTY Screen size: 33*14*4MM Working current: <40mA Built-in battery: 3.7V/400mAh Charging current: about 500mA Charging time: about 1 hour Battery life: RX about 6-8H, TX about 8H Bluetooth distance: ≤10M (open place) Charging method: Type-C 5V/0.5A Compatible Devices: for Android, for IOS system mobile phones and PAD, active speakers, power amplifiers and Bluetooth speakers or headphones that support A2DP/protocol connection. Working Modes: 1. Transmitter mode: wirelessly streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth enabled headphones or speakers. 2. Receiver mode: wirelessly streams audio from your Bluetooth-enabled phones, tablets, or computer to your wired stereo/speakers/headphones/car stereo. 3. USB Disk/TF Card in receiver mode: it can wirelessly stream audio to your wired stereo/speakers/headphones/car stereo. 4. USB Disk/TF Card in transmitter mode: it can wirelessly streams audio to your wireless bluetooth enabled home stereo/ bluetooth speakers/bluetooth headphones. Package Includes: 1x Bluetooth Transmitter Receiver Adapter 1x USB-C Power Cable 1x 3.5mm Aux Cable 1x RCA Aux Cable 1x User Manual