SHARKK Vertical Mouse 2.4 GHz Wireless Ergonomic Optical Tracking Computer and Laptop Mouse ADDED COMFORT: The ergonomic vertical design promotes natural hand motion and alleviates pain and stress cause by regular mice. ADVANCED TECHNOLOGY: This SHARKK wireless (2.4 GHz frequency) vertical mouse features optical tracking technology for advanced precision and easier movement. BETTER TRACTION: Advanced DPI settings means increased sensitivity and better traction control. EASY TO USE: Just plug and play. This mouse will automatically install its drivers and is fully compatible with Windows (full functionality and side scroll buttons not compatible with iOS). COMPACT DESIGN: Small, portable design and wireless technology makes it great for use with any computer or laptop that supports USB.