Pros: Profiles. Fits in hand. LED notification makes sense and intuitive. Enough buttons for your needs Macro to perform windows tasks. Durable; buttons are still responsive. Charge/link with common micro usb. profiles are on mouse.
Summary: It works perfectly and it's an actual original Logitech manufactured part. You have to use the syncing software(leaflet included). If you don't have the software, go here and choose your OS/etc.(worked as of 9/1/14) http://www.logitech.com/en-roeu/support/11201?
Summary: I bought this because I lost the old one. It works just like the old one. Nothing different. It's very easy to follow the instruction to reconnect to my G700. The only complaint is its price is too expensive for this little receiver.