★ 3 Sensors: Accurate data collection, simple wearing, can establish brain-computer connection, eliminating the tedious wearing steps in the laboratory, only need 3 sensors to touch the skin to obtain data. ★ Brainwave Control: Supports 3 applications: Basic Detection, Mind Explosion Fruit, and Brainwave Lie Detector. Self-assembly, hand-brain combination, cultivate hands-on ability, and efficiently train brain concentration. ★ Self assembly: Easily master the state of the brain, the application allows you to train and analyze your concentration and learn mechanical principles during the assembly process. Children who usually can't sit still will calm down immediately as long as they play with puzzles. ★ Size: 1.96foot(60cm).Buckle design can be freely adjustable size for a variety of head type. ★ Parent-child interaction: It can accompany children's training and growth, helping children balance play and study time. You can also access the cloud-based brainwave database to compare your child's scores with those of other children of the same age.