Highly adaptive one-second connection: The RX switch in receiver mode enables lightning-fast pairing with your phone, tablet, laptop or car stereo. In TX switch mode, the wireless audio adapter automatically connects to your Bluetooth headphones or speakers, so you can instantly immerse yourself in your favourite music and movies. Zero-delay HD streaming: Advanced AptX Low Latency and AptX HD technology eliminates any Bluetooth audio latency, enabling perfectly synchronised TV, film and video content. With the Bluetooth 5.0 chip, hi-fi Bluetooth audio signals are reliably transmitted to speakers or home stereo systems. Multifunctionality and NFC interface: This Bluetooth 5.0 receiver offers versatile connection options such as 3.5 mm AUX and RCA, as well as optical and coaxial inputs. In addition, you can play music from U-Disk or TF card. The NFC interface makes touch connection with mobile phones and tablets easier by automatically displaying the Bluetooth pairing interface. Simple control and infrared remote control: an LED digital display clearly shows the device's current operating mode. The infrared remote control allows you to conveniently connect Bluetooth headphones remotely while you relax on the sofa. Enjoy your favourite sports or movies without disturbing your family. Long-lasting performance: A built-in 500mAh battery provides up to 8-12 hours of uninterrupted music enjoyment. Charge at the same time as you stream to ensure your music is always available. The delivery includes a Bluetooth adapter, a 3.5mm AUX audio cable, an RCA audio cable, a Type-C charging cable, a user manual and an infrared remote control. Specification: Size: 92*65*20mm Weight: 75g Operating band: 2.402GHz-2.480GHz Battery specification: 3.7V/500mAh Charging time: 1.5h Usage time: Receiving RX: 10h/Sending TX: 8h Charging method: Type-C Compatible devices: Android, IOS system mobile phones and PAD, active speakers, amplifiers and Bluetooth speakers or headphones that support A2DP/protocol connection. Use Supported formats: MP3/WAV/WMA/APE/FLAC/G729/M4A/ALAC/AMR/DTS/MIDI/G726/MTY Features: Bluetooth receiving (RX), Bluetooth transmitting (TX) 2-in-1 design, toggle switch for quick switching. Equipped with high-definition LED digital display, the working status and Bluetooth mode are clearly visible. Built-in digital-to-analogue chip, supports digital optical fibre, coaxial, AUX, RCA, U disk, TF card six signal interfaces. Improved NFC function, mobile phone connects with one touch, avoiding tedious manual connection. Cool breathing light, red/blue two-tone, soft and not glaring. Supports 5~8 metres infrared remote control, supports all the functions of Bluetooth receiver, including signal switching/volume control/channel connection. Built-in HD microphone, supports wireless listening, hands-free calling, navigation. Save the status of the device/source/sound/volume before turning off, convey the current usage status via voice prompt, and automatically reconnect after turning on. Easy to connect, no drivers and no hassle of downloading the APP. Packing list: Bluetooth adapter host x1 Type-C charging cable x1 3.5mm AUX audio cable x1 RCA audio cable x1 Instructions for use x1