RC Gesture Sensor Dance Robot Programable Inteligente Sing Remote Control Educational Humanoid Robotics Toys For Boys Features: As your hand moves, the gesture sensor will detect such and make the robot, retreat, turn left / right. Interestingly, as it patrols forward and meets an obstacle in its way, it will move backward and then turn left / right. you can program a series of movements, and see the robot execute them rhythmically with music. Battery of Robot: 3.7V Lithiym Battery Product Functions: Slide Forward/Backward, Walk Forward/Backward, Turn Left/Turn Right, Gesture Sensor, Dancing and Singing, Patrol and Obstacle Avoidance, Intelligent Programming, Auto Display, Mechanical Language, Volume Product details: Charging Duration: 120 minutes Game Duration: 60 minutes Battery of Remote Control: 2 x 1.5V AAA Batteries (not included) Product Measurements: 26x8x16cm / 10.4x6.3x3.15in Incliudes: 1X RC Robot(Built-in battery Included) 1X Remote Control(Batteries not Included) 1X Charging Cable 1X User Manual