control. 2.4G band remote control, long distance remote control. No foundation, easy to learn programming, suitable for children, students, teens, adults, enthusiasts. Training Hands-on Ability: More than 300 parts assembly, enjoy the fun of assembly. Building blocks are to train and exercise children's imagination, spatial perception and structural thinking. Cultivate children's brain power and hands-on ability. Learning in Play: The joints can move freely, fun and interesting. Support gravity sensor/path mode/voice control/STEM programming, etc. Large motor, servo motor and other power devices can make the intelligent robot move forward and backward and rotate 360 degrees. STEM Education and Development: Learn programming like building blocks, it can motivate the children's interest in learning, develop programming thinking and enhance logical analysis ability. Safe Friendly Materials: Made of high quality ABS raw materials, safe use. Built-in lithium battery, with USB charging cable, the charging time is about 1 hour. Specifications: Product Model: 13001/13002/13003/13004(optional #xff09; Material: ABS Number of Blocks: 392pcs(13001);349pcs(13002);333pcs(13003);351pcs(13004) Support System: Compatible with Android, iOS Smartphone Built-in Battery: Built-in lithium battery, 400mAh, 3.7V Remote Control: 2 * AAA Batteries are required. (Batteries are not included. #xff09; Product Size: 13001: 17 * 11.5 * 21cm / 6.7 * 4.5 * 8.3in 13002: 13.5 * 10.5 * 18.5cm / 5.3 * 4.1 * 7.3in 13003: 14 * 9 * 21cm / 5.5 * 3.5 * 8.3in 13004: 15 * 12 * 20cm / 5.9 * 4.7 * 7.9in Package Size: 20 * 6.8 * 28cm / 7.9 * 2.7 * 11.0in Packing List: 1 * Building Block Particles Kit 1 * Module 1 * USB Cable 1 * Remote Control 1 * User Manual