Specifications: 1.Fully compatible with Bluetooth 2.0, Bluetooth 2.1, Bluetooth 3.0, Bluetooth 4.0 and Bluetooth 4.2 specifications. 2.Comply with Bluetooth 5.0 technical specifications, dual mode transmission. 3.Farther transmission distance: 100 meters long transmission distance (no blocking), strong signal. 4.24Mbps transmission rate, providing stable and high-speed transmission of file and audio data. 5.Intelligent sleep wake-up energy-saving, 24-bit CRC check to resist interference, adaptive frequency hopping to reduce crosstalk. Item Name: Bluetooth Adapter Material: Plastic + Metal Bluetooth Version: 5.0 Interface: USB 2.0 Compatible System: for Windows XP/Vista/Win7/Win8/Win8.1/Win10 Features: Mini, Plug and Play, High Speed, Easy to Carry Size: 13mm x 14mm x 6mm/0.51"" x 0.55"" x 0.24"" (Approx.) Package Includes: 1 x Bluetooth Adapter"