Parent Unit includes a built-in rechargeable battery that supports up to 8 hours of portable operation. Belt clip to attach to your pocket or shirt. 

Easy Set-up- Connect power for all units and allow 1-min for the units to link to each other

The speaker volume on the parent unit adjusted by pressing the up or down arrow keys.

Large operation range covers up to 1,000 feet

The parent unit emits different alert tones for low battery or Out of range, etc. 

LED lights on the parent unit indicate the level of sound in your baby's room so you can visually monitor the noise level with the unit muted.

Digital Wireless Transmission eliminates background noise. High sensitivity microphone. 

Dimensions 10 x 8.9 x 3.4 inches

Brand new in box. Imperfections to box evidenced in photos.