Logitech MX Vertical Wireless Mouse – Advanced Ergonomic Design Reduces Muscle Strain, Control and Move Content Between 3 Windows and Apple Computers (Bluetooth or USB), Rechargeable, Graphite Mice - Newegg.com
Logitech MX Vertical Ergonomic Wireless Mouse
Logitech MX Vertical vs J-Tech Digital V628X Side-by-Side Mouse Comparison - RTINGS.com