Many people forget to turn off their presentation remote after using it. This is why there is no ON/OFF button on the Logitech R500. The remote automatically goes to sleep when you don't use it. This smart power management ensures that the battery doesn't go down when the remote isn't being used. Even when the R500 is stored in your bag and buttons are pressed, the remote will wake up and instantly go back to sleep because it is not connected to a computer.