2016 Star Wars Smart R2-D2 Droid is interactive, The app for the unit is No Longer available to download as of Nov. If you already have the app downloaded then it will work as designed. Requires 4 AA batteries to operate. Stands 9.5 inches tall and 6.4 inches wide. The droid has a few clever functions without the app, such as an alarm mode that causes it to make a siren sound if it detects motion, and two other modes.