Specifications:Bluetooth 5.0: transmission distance 0-30m, faster and more stable than bluetooth-compatible 4.0 version transmission.Free drive: plug and play, no driver installed, mobile phone/tablet can transfer text, photos, install the full version of the driver, the computer can be connected to the bluetooth-compatible headset/speaker.Connect the bluetooth-compatible mouse/keyboard: get rid of the distance limit, responsive and unlimited.Mobile phone/tablet connected to the computer: no need to open the software, no network can also transfer photos and files.Support multi-device connection: to achieve computer connection with other Bluetooth-enabled devices (mobile phone/tablet/mouse/keyboard/Bluetooth headset/Bluetooth speaker/game controller/ printer, etc.)Item Name: bluetooth-compatible AdapterBluetooth Standard: bluetooth-compatible V5.0Interface Type: USBTransmission Distance: 0-30mFrequency Range: 2.4GHzRated Voltage: DC 5VLength: 13mm/0.51", Width: 14mm/0.55", Height: 6mm/0.24" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Adapter1 x Drive CD