★[Wireless Transmitter & Receiver 2in1] Receiver mode: Wirelessly streams audio from your Wireless-enabled phone, tablet, and computer to your wired stereo speakers, or headphones (Only support to be paired with one Wireless receiver). Transmitter mode: wirelessly streams audio from your non-Wireless TV, home stereo system, or CD player to your Wireless headphones or speakers. ★[33Feet Coverage & Permanent Work] With built-in antenna, 3.5mm aux Wireless transmitter for TV can reach up to 33ft coverage. You can lie on sofa watching movies or walk around listening music. The battery supports 10-hour service. Or work whilst charging and work permanently.