Feature: 1. COMPREHENSIVE EXPERIMENTS: Allows for experiments converting mechanical energy, chemical energy, wind energy, and light energy into electrical energy. 2. CONVENIENT AND INTUITIVE: The energy conversion experiment device is designed with ease of use, strong visual feedback, and noticeable results. 3. DEEP UNDERSTANDING: By using the experiment device, students can gain a deeper understanding and mastery of energy conversion and conservation laws. 4. WIDE APPLICATION: The energy conversion experiment device finds extensive use in children's science projects, physics, mechanics learning, and classroom teacher demonstrations. 5. ENHANCE LEARNING: This device facilitates hands on learning and helps cultivate a better grasp of energy conversion principles and concepts. Specification: Item Type: Power Conversion Experiment Board Material: ABS Battery: 1.5V AA batteries x 2 (without battery delivery). Package List: 1 x Power Conversion Experiment Board