** Best-in-class Long Range ** The VTech DM111 Audio Baby Monitor's dependable long operation range covers up to 1,000 feet, lets you go about your day and stays connected with your baby from another room or even from the yard ** Upgraded Rechargeable Battery ** Parent Unit includes a built-in rechargeable battery that supports up to 8 hours of portable operation. With the belt clip, the Parent Unit can be attached to your pocket or shirt ** Easy Set-up Plug & Play ** Simply connecting power for both units and allow 1-min for the units to link to each other ** Easy to Use ** The speaker volume on the parent unit is easily controlled by pressing the up or down arrow keys. When the parent unit is in mute, the visual sound indicator will still indicate the sound detected from the baby unit ** 5-level Sound Indicator ** A set of five LED lights on the parent unit indicates the level of sound in your baby's room so you can visually monitor noise level with the receiver muted ** Sound Alerts ** The parent unit emits different alert tones for situations needed your attention: Low battery or Out of range, etc