This VEX Robotics Design Engineering System v.5 is a must-have for all robot enthusiasts out there. With its top-notch engineering, this preowned toy will provide you with hours of fun and learning experience. It comes with an OEM #73 battery holder that ensures a smooth and efficient power supply to the toy. The toy is perfect for those interested in radio control and control line hobbies. It has a model of an engineering system toy that is ideal for enhancing your creativity and engineering skills. Get your hands on this remote-controlled toy today, and let the fun begin!