WIRELESS AUDIOTRANSMISSION RATE - Max 24Mbps, Frequency Band 2.400-2.480GHz,which is faster and more stable than the Bluetooth version 4.0 transmission.TRANSMITTER - The portable and lightweight wireless audiotransmitter for a wide range of situations and uses. BE APPLICABLE WINDOWS SYSTEM - Windows 8/10 plug and play. Drivers are required only when Windows 7 and earlier systems need to connect audio devices without the need to connect a mouse, keyboard and phone. HIGH COMPATIBILITY - Support 3bit / 64bit Win 10/8/7 / Vista and XP, so that PC or laptop can connect to Bluetooth-enabled devices. Backward compatible with Bluetooth V4.0 / 3.0 / 2.1 / 2.0 / 1.1. SUPPORT MULTI-DEVICE CONNECTION To achieve computer connection with other Bluetooth-enabled devices (mobile / tablet / mouse keyboard / Bluetooth headset / Bluetooth speaker / game controller / printer, etc.) EXTREMELY SMALL Small size allows you to leave it on laptop or PC, no need to remove, it seamlessly gets plugged into a computer/laptop without blocking surrounding USB ports, save space