Comfortable ergonomic design Switch easily between your computer, tablet, and phone 6 clickable buttons, metal scroll wheel, on/off switch, and connection switch 5 adjustable DPI sensitivity levels: 600/1000/1600/2400/3600 DPI Connect up to 3 devices simultaneously with Bluetooth wireless technology or a USB nano receiver 2 Bluetooth wireless connection channels 2.4GHz wireless connection with USB nano receiver (stores in battery compartment when not in use) USB plug and play Advanced Optical Windows, MacOS, ChromeOS, Android, iOS compatible