Switch access to ipads and tablets. For iPad, plug any switch(es) into the interface for cause/effect, switch timing practice, AAC auto-scan and step-scan, spelling, and any other apps on the horizon! For PC/Mac. It works through Bluetooth 2.1 for simple pairing and range of over 50 ft. For iPad, any app that has been programmed for switch access allows access via switch(es). Many special needs/AAC app developers *are* incorporating switch access and these will work with my devices.It has a lithium-ion battery that recharges through your USB port or USB AC charger (like for your iPad/iPod).