This is a good value product. But as I said, its a "value" product. The base unit is wired (needs a power connector - supplied), the remote unit is wireless (battery powered). The battery longevity for the remote (parent) unit is average. The volume on parent unit is good enough, you have to be attentive, but good enough.
Areas of improvement :
- Base unit (baby unit) could be wireless, so your baby could sleep "away" from a power socket
- Battery life could be better (Li-polymer anyone ?)
- Volume on the remote unit (parent unit) could be louder