Most things finder : 1 RF transmitter (Remote Control) and 4 receivers for locating most items like keys, wallet, TV remote control, purse, glasses whatever you need to find . Easy quickly to Locate : Simply pressing on the related color-coded buttons, Powerful finder tracker radio frequency can penetrate through walls floors etc to help find UP TO 30 meters away, quickly locate valuable items in your home or on your property. Sounds Mini Flashlight : Receiver sounds/beeps, leading you to track your lost item.The remote control with a led light ON/OFF switch is located at the right side of the transmitter, it is extremely handy when you need to find something in the dark. Best Gift for Seniors and forgetful People : With large press buttons,is easy to use and particularly suitable for seniors and forgetful People. (NOTE: Batteries AAA, 1.5V 2pcs for Transmitter are NOT included, 4 x CR2032 Batteries for reciever are included.)