Logitech Cordless MX Duo 967300-0403 Black 104 Normal Keys 12 function keys + 1 wheel Function Keys RF Wireless Standard Keyboard Keyboards - Newegg.com
Logitech Cordless MX Duo Desktop Keyboard & Mouse MAC/PC Tested All Works Nice 97855018168 | eBay
Logitech MX Duo - Page 4 - receiver - Recharcher and more buttons
Logitech Cordless MX Duo Keyboard and Mouse - CNET
Logitech MX Duo 967300-0403 Wireless Keyboard Brand New Open Box | eBay