I already had a Logitech Remote 555 that was not bad thing (see my review) but we climbed another échelon.Les keys are arranged by function groups, more batteries but rechargeable batteries with the USB cable and adapter provided (the USB cable will not charge the computer) all holds about a week before recharger.Une ease of grip but starting the program is a bit long and tedious (approximately 1 hour depending on the number of devices) and you need a computer necessarily what can still hinder some people.The price has dropped but remains therefore but she supports a spectacular number of devices (my mitsubishi aircon and amp harman / kardon) If you want a control all in one, easy to use and in addition with great design go ahead.