Nikko Rock CrushR R/C is designed for tackling various terrains with its patented Auto-Expanding wheels, providing superior grip. The reticulating arms automatically reach out to grip the terrain, ensuring exceptional performance. It comes with a powerful built-in USB quick charge Lithium Polymer battery for competitive performance straight out of the box. The dual motor 4-wheel drive offers both power and grip on any terrain. The Nikko remote control, equipped with 2.4GHz transmission technology, allows interference-free fun for up to 10 players racing simultaneously. Nikko emphasizes quality and innovation through the incorporation of the latest technologies, extensive durability testing, and efficient designs. The product is fully assembled and suitable for ages 6 and above, measuring 13″ (33cm).