Usage Tips: Features Qualcomm Bluetooth 5.2 chip, supports aptX-HD, aptX-LL, SBC, and AAC codecs. Provides low latency and lossless decoding technology to ensure high-quality audio performance, delivering a Hi-Fi listening experience. 2-in-1 function supporting both transmitter (TX) and receiver (RX) modes. Supports Dual Stream and Multipoint Connectivity. In transmitter mode, it can connect to two Bluetooth headsets or speakers simultaneously (best performance achieved when using identical audio devices or the same audio encoding format). In receiver mode, it can connect to two smartphones at the same time. RX Receiver Mode compatible with Car Kits, Wired Speakers, Home Speakers, Amplifiers, and Headphones. TX Transmitter Mode compatible with TV, PC, Laptop, Projector, Amplifier, TV Box, Bluetooth Headphones, Earphones, and Bluetooth Speakers. This is a 2-in-1 Bluetooth audio adapter designed solely for audio transmission. It cannot be used for keyboards, mice, or file transfer. Bluetooth transmitter function adds wireless capability to non-Bluetooth devices such as TVs or computers, allowing them to connect to Bluetooth speakers or headphones. Utilizing advanced pairing technology, it does not appear as a standard Bluetooth device on phones, computers, or TVs. Pairing occurs automatically when compatible Bluetooth devices are brought within range. Bluetooth receiver function enables wired speakers or headphones to receive audio wirelessly, allowing Bluetooth-enabled devices like smartphones to connect to wired audio equipment. Equipped with independent LED indicator lights for clear and intuitive status display. Features a Type-C fast charging port for convenient charging. Transmitter mode supports audio input via Type-C interface. Includes 3.5mm audio input/output jack for broad compatibility. Built-in 500mAh rechargeable battery for extended use.