Features: brand new and high quality 2 in 1 design receiving/transmitter: Dual mode one-key switch,simple operation,for multiple devices. BT 5.0 for smart chip:Signal transmission is faster and more stable, listening to songs is smooth and not stuck, for a variety of devices. Can be usedas a card reader: With card reading function,insert the SD card into the receiver and insert it into the computer to read data. Product parse: Complete functions,simple and convenient operation. Plug and play: Memory connection,integrated BT driver,plug and for play savinginstallation trouble. Specifications: Material: ABS Item Type: Bluetooth-compatible Adapter Bluetooth-compatible Version: 5.0 Transmission Distance: 10 meters Size: approx. 52x22x9mm/2.05x0.87x0.35in Color: Black Quantity: 1PC Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Bluetooth-compatible Adapter