【Transceiver Mode】: Transmitter Mode: Wirelessly transmits audio from a non-Bluetooth TV, home stereo system or CD player to a Bluetooth headset or speaker. Receiver mode: wirelessly transfer audio from a Bluetooth-enabled phone, tablet or computer to cable stereo, speakers or headphones. No microphone. | 【Simple operation】: Switch between transmitter and receiver modes with a single tap of the switch. Easily connect using advanced Bluetooth technology and a 3.5mm audio cable (included). | 【Ultra-portable audio stream】: Only 44 mm (1.73 inches) wide and weighs only 18 grams (0.63 ounces), but with powerful wireless audio streaming. Slide the transmitter and receiver into a backpack or laptop bag and carry it with you effortlessly. | 【Broad Compatibility】: This receiver transmitter adapter can be widely used in your computer, laptop, home stereo system, headset, smartphone, Mp3 player with the included 3.5mm cable and 3.5mm to 2RCA cable. , CD player, etc. | 【TERRIFIC SOUND QUALITY】: FKH Bluetooth apater built-in advanced CSR chip both transmitter mode and receiver mode support fidelity sound quality to keep more audio details providing you with a richer and near-lossless sound