The desktop mini bluetooth smart car V3.0 kit gives you the ability to build your own smart car robot through the completion of various creative projects and learn to control it with mixly blocks coding. It features functions such as line tracking, obstacle avoidance, cross maze, ultrasonic following, gravity sensing, voice control, control from an IR wireless controller, and smartphone control via Bluetooth. Additionally, it includes a microphone sound module that allows for the playback of music or other sounds during the driving of the smart car. Control from a smartphone is done through the Dekstop Car app for Android and the Keyes BT Car app for iOS. The robot can be powered by 2x 18650 batteries or 4x AA 1.5V batteries (not included).