2 in1 USB Wireless Bluetooth Transmitter Receiver Audio Adapter 3.5mm Aux CarThe product is shipped based on the color or size of the main image of the product page.Specifications: Product model: C28 Bluetooth audio receiving and transmitting two in one Product color: Black Product weight: 39G Package size: 103 * 68 * 18.3mm Battery capacity: 140amh Product packaging: 1pcs / neutral English color box Suitable type: computer, TV, projector (transmitting mode) / speaker, headset (receiving mode) Notes: 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. Package Includes: 1x Bluetooth 5.0 Audio Transmitter/Receiver Adapter 1x charging cable 1 x 3.5 Audio Head 1 x User Manual