iOS 10+ & Android 5.0+ compatible Interchangeable, removable plastic shell Gyroscope & Accelerometer LED Lights Bluetooth connection (10 meter range) Micro USB charging (almost 1 hour of play on a full charge) Free App: Sphero Mini app available through iTunes or Google Play Height: 42mm / Width: 42mm / Weight 46g Top speed 1m/s Charging time 1 hour Sphero Mini packs tons of fun into a tiny, app-enabled robot about the size of a ping pong ball. Drive Mini using different modes with the Sphero Mini app, or just by using your face. Yes, you read that right. Face Drive is a hilarious new feature that uses your facial expressions to drive the ball.Minis games are just as addictinguse the ball as a controller to shoot your way through space, race a ship through a tunnel, or rotate your ball to destroy a polygon of bricks. Thanks to the beauty of app updates, theres always more on the way. If youre feeling extra clever, download the Sphero Edu app and program your robot using JavaScrip