With the Ravensburger GraviTrax POWER Element Connect, you can easily control your marble run digitally. This electronic component connects the POWER system to your smartphone or tablet via Bluetooth. Sequences can be programmed and the marble run can be remotely controlled via an app. The hexagonal element fits seamlessly into existing tracks and enables precise control of the marble paths. An enclosed instruction booklet makes it easy to get started with digital marble run control. The expansion is compatible with all GraviTrax product lines, including CORE and PRO.