The main unit is like new, but the English instruction manual is torn. This learning remote control replaces all the functions required for audio and video remote controls. It learns all functions directly from the original remote control. This remote control is aimed at anyone who is dissatisfied with an overloaded original remote control, as it often only uses the most important buttons such as power, volume, and channels. By not using less frequently used buttons, this remote control is ideal for the elderly, who may sometimes accidentally press buttons. After installing the batteries, you need to set up the remote control.