Mi Robot Rover can take you to places to never imagine! Build and craft your own Rover Robot and explore the unknown through your imagination such as the Moon, Mars, or your own planet! Great fun for the family and children. TRACK CHASSIS: The Mi Robot Builder (Rover) features a track-style chassis that can scale obstacles with great agility. The track components are made of lightweight, high-strength materials, and its uniquely reinforced anti-slip ribbing enhances the durability and grip of the track belt. The Mi Robot Builder (Rover) can easily conquer complex terrain, bringing you endless amounts of fun. LONG BATTERY LIFE: The master remote control of the Mi Robot Builder features a 32-bit ARM Cortex-Mx processor to achieve fast processing speed, and has three built-in 1650mAh lithium batteries for long battery life. HIGH-PRECISION PARTS FOR BETTER ASSEMBLY AND FEEL: All 1,086 parts of the Mi Robot Builder (Rover) are formed using high-precision injection molding. This includes the six different gears, worm drive assembly, universal joints, and continuous tracks that make up the robot’s precise and efficient mechanical transmission structure. All of the Mi Robot Builder’s parts are made from eco-friendly and safe materials that have been certified by the RoHS of the European Union, so you can play with ease of mind. MULTIPLE CONTROL MODES FOR ENDLESS FUN: The upgraded Mi Robot Builder app allows you to choose from even more control modes. The optimized remote mode, more powerful programming mode, and newly added voice control mode offer more fun and ways to play, that open up endless possibilities. HUNDREDS OF TRANSFORMATIONS TO UNLEASH YOUR CREATIVITY: The Mi Robot Builder (Rover) features a variety of brand new parts. In addition to using these parts to build the original sophisticated and complex models, you can use any combination of parts to fashion your own DIY design. By letting your imagination run wild, you can truly experience the thrill of endless design and transformation possibilities.