【TX Mode & RX Mode】ByDiffer aux Bluetooth transmitter receiver supports both Bluetooth transmitting and receiving, namely TX and RX Mode. Adding Bluetooth function to Airplane, your old TV, desktop computer, and home sound system like boss wave. Making your old car and wired speaker /headphone Bluetooth function enabled. | 【Advanced Codecs】The Bluetooth splitter supports APTX, SBC, AAC, APTX-LL, APTX-HD, APTX-AD. Automatically provide the best codecs based on the your device. Brings more stable and low-latency signal transmission. | 【Pairing 2 Devices】In TX Mode, Bluetooth transmitter for TV can be paired with 2 Bluetooth headsets simultaneously. In RX Mode, 2 cellphones can be connected with Bluetooth music receiver at the same time. | 【Created For Music】ByDiffer Bluetooth 5.0 audio adapter, supporting DSP, ADTS and APTX LL codec, brings you HiFi music experience. Enjoy CD-like audio quality music at no compromise. Adjust volume and previous/next track all on ByDiffer aux Bluetooth music receiver. | 【Take It Anywhere】The battery lasts for 8 hours. You can use Bluetooth earbuds or headphones to watch to airplane’s and gym’s video or music with ByDiffer Bluetooth transmitter. | 【ONE YEAR WARRANTY】ByDiffer provides one year warranty