● S/S Lid with black plastic central and S/S Body ● 1 plastic inner bucket                            ●When any object is 15-20cm above sensor window,the lid opens automatically, then close automatically 5 seconds after garbage is thrown into the bin.  You also can open and close by press the relative button.                                                                                                                                         ● Sensor Distance: 15-20cm                                                    ● 4 pieces of "AA” size battery (not included)