The connection you want with the freedom you need! For the mom who wants the ultimate mobility with her connection to baby, micro-technology allows this monitor's receiver to be the size of a wristwatch. So you can actually wear it while baby is sleeping, and no matter what you're doing, you're connected to baby -- with an interference-free transmission up to 800 feet. At the end of the day, slip the monitor into its docking station to recharge (just like your cell phone). As the battery recharges, it also works as a nighttime monitor. Other features include an out-of-range indicator, sound lights to let you see as well as hear baby's activity, different straps for different ways to wear it, a clip for wearing it attached to a pocket or bottom of a shirt, and a transmitter with a pager to help locate the receiver if it's misplaced. Includes one 2.4V Rechargeable NiMH Battery Pack.