4 years & up. Our best-selling, classroom-favorite Robot Mouse is now rechargeable! Keep the fun coding without the waste and inconvenience of frequent battery changes. Recharge the mouse with a simple USB cord (included) for hours of play. The race is on to build hands-on coding skills. Build your maze and then use the coding cards to create a step-by-step path for Colby, the rechargeable mouse. Program the sequence of steps, then watch Colby find the cheese. Colby lights up, makes sounds, and features 2 speeds along with colorful buttons to match the coding cards for easy programming and sequencing. Add multiple players with Jack, the programmable robot mouse, sold separately.