Important Note : For Android 2.2 and up, devices with 3.5mm audio headphone jack. [POWER IN SPEED] Silverlit Smart Link Control Turns your Smart Phone into the Controller. Plug the Smart Link Control Stick into your Smartphone to control all of the Silverlit Power in Speed branded 1:50 scale Ferrari Cars. The Silverlit Smart Link Control app provides users the Virtual Joysticks and bring you beyond more than a traditional approach to R/C play but all with the connection between your phone and the car. 6 different Ferrari models work with the app and the Smart Link Control dongle. Cars drive with full function control go forward, backward, turn left and right. Digital proportional speed control for multi stage acceleration. (c) 2011 All rights Reserved. Silverlit is a Trademark of Silverlit Toys