Features: Experience seamless sound with Bluetooth-compatible 5.4 Transceiver's double mode functionality, delivering very fast transmission, clear sound via advanced decoding, and 12 hour continuous operate for uninterrupted listening. This compact ABS built wireless sound adapter features button controls for effortless mode switching, volumes adjustment, and track navigation, enhanced by general compatibility with 3.5mm sound devices. Perfect for audiophiles, frequent travelers, and remote workers seeking stable wireless connectivity for headphones, speakers, or car sound systems during commutes or home entertainment setups. Transform your gaming marathons, office conference calls, or outdoor adventures with this portable sound transmitter receiver that maintains stable connection within 33ft ranges. Engineered with energy efficient technology, this pocket sized wireless sound solution automatically enters sleep mode during inactivity, preserving battery life while maintaining quick pair readiness. Specifications: Component : ABS Heas size: about 29x55mm/1.14x2.17inch Battery: included Package Includes: 1xTransmitter Receiver note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.