- [RX and TX 2-in-1 Mode]: The device operates in two modes, making it versatile for various audio needs. In Transmitter Mode, stream audio wirelessly from non-Bluetooth devices like TVs or CD players to Bluetooth headsets or speakers. In Receiver Mode, wirelessly send audio from phones, tablets, or computers to wired speakers, headsets, or home stereo systems. Note: This device has no microphone functionality. - [User-Friendly Operation]: Switching between modes is effortless simply flip the switch. Connect easily using advanced Bluetooth technology and the included 3.5mm audio cable. - [Compact and Portable]: Measuring only 44mm (1.73 inches) wide and weighing just 18g (0.63 oz), this device is designed for portability. It fits conveniently into your backpack or laptop bag, allowing for audio streaming on the go. - [Extensive Compatibility]: This adapter works seamlessly with a range of devices, including computers, laptops, home stereo systems, smartphones, MP3 players, and CD players using the included 3.5mm and 3.5mm to 2RCA cables. Please note that it does not support optical audio output, such as from Samsung smart TVs. - [Use Cases]: 1. Transform your non-Bluetooth home stereo system by streaming music from your smartphone directly to it. 2. Easily connect your Bluetooth headset to your TV for a private listening experience without disturbing others. 3. Stream audio from your laptop to a wired speaker system for enhanced sound during presentations or movie nights. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.