Levana Wireless Audio Baby Monitor: * 2-channel switching for optimized wireless signal * 40MHz wireless provides range up to 300 feet * Sound indicator LEDs show if your baby is crying * Belt clip allows you to carry your monitor anywhere you go * Parent and baby units have wall-mountable options * Volume control on parent unit * 24/7 live customer support for the lifetime of the product * Parent unit requires 3 AAA batteries (not included) * Baby unit can be powered with included adapter or 3 AAA batteries (not included)