Upgrade your wired headphones, speakers, or home audio systems with our Multi-Function Bluetooth 5.4 Audio Receiver & Broadcaster. Whether you want to enjoy wireless music streaming, share audio across multiple devices, or enable short-range communication, this compact yet powerful device delivers seamless, high-quality sound in any scenario. Bluetooth audio receiver mode, connects effortlessly to smartphones, tablets, or laptops via Bluetooth 5.4 to transforms wired headphones, speakers, or home theater systems into wireless devices. Broadcast Bluetooth mode,bluetooth broadcast receiver,support pair multiple headphones/speakers to a single TV or PC-ideal for silent discos, group presentations, or guided tours.Bluetooth broadcast transmitter mode,turn the device into a short-range walkie-talkie-great for team travel, teachers in classrooms, church sermons, or restaurant staff communication. Built-in 550mAh rechargeable battery ensures long-lasting performance,after full charging, up to 6 hours in Bluetooth receiver mode. Up to 20 hours in Broadcast mode (Receiver/Transmitter). Built-in ENC (Environmental Noise Cancellation) & Mute Function-enhances call clarity and reduces background noise.Under Bluetooth transmitter mode,double click "ENC" button to ON/OFF this function. Support 3.5mm Aux ouput and input. Bluetooth version:Bluetooth 5.4 Audio codec: AAC LC3 Mode:Bluetooth audio receiver,Bluetooth broadcast receiver,Bluetooth broadcast transmitter Battery:550mAh Play time:Bluetooth audio receiver:6h Due to different batches, there may be differences in product appearance and printed text, which not affect use Color:Black Material:Plastic Package Contents: 1 * Bluetooth 5.4 Audio Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.