Features: Brand new and high quality Simply connect your speaker/headset with our device, immediately transform your speaker/headset into a fashionable wireless Bluetooth-compatible speaker/headset. Removing troubles of connection, through the wireless connection and transmission, the user can enjoy a high-fidelity music at any place indoor by wireless control. Mini size design the feature of portable can let you carry them to anywhere you want. suitable for home stereo/speaker, car stereo, headphones that is with 3.5mm audio. Simply press a button to quickly switches transmitter / receiver modes. Specifications: Material:ABS Bluetooth-compatible version: 5.2 Battery capacity: 150mAh Power supply interface: TypeC Size:Approx.76x24x12mm/2.99x0.94x0.47inches 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. Package includes: 1x Bluetooth-compatible 5.2 Transmitter Receiver