Standard: Bluetooth v5.0 dual-mode & low energy profile Backward compatible with Bluetooth version: 4.x, 3.x, 2.x Interface: USB 2.0 Data transmission speed: 3 Mbps Range: up to 10 m LED diode: yes Dimensions: 19×17×8 mm Works with operating systems: Windows 2000/XP/VISTA/7/8/10 Weight: 3 g