Top features:- Low profile design makes cleaning under furniture easy - Acoustic sensors and iAdapt enables Roomba to focus its performance where it's needed most - Three stage cleaning system and spinning side brush makes Roomba quick and efficient Low profile designSay goodbye to vacuuming and have more time for the things that matter with the iRobot Roomba 680 Robot Vacuum Cleaner.Designed to fit under most furniture and along skirting boards, you can be sure your home is getting cleaned thoroughly. Roomba can be pre-programmed to vacuum up to seven times per week for a time that suits your family's schedule, meaning your house will always be clean when you arrive home.Acoustic sensors and iAdaptRoomba can detect high concentrations of dirt, dust and pet hair so it can focus its cleaning power in the areas that need it most. Intelligent iAdapt uses a full suite of sensors to enable Roomba to work its way around your room and into all the nooks and crannies that you might miss with a traditional vacuum cleaner. In addition, cliff-detection sensors allow Roomba to avoid steps, stairs and other drops that might potentially damage it.Three stage cleaning systemRoomba's spinning side brush helps it to push debris into its path before the three stage cleaning system uses a combination of technologies to extract debris and vacuum up dust and dirt.