Features: Endless Creativity: Includes 45 versatile components and three 12.5 × 25 cm base plates that can be easily connected, allowing children to construct unique and exciting circuits that spark creativity and innovation. Fun and Educational: Designed for young minds, with no soldering or tools required, providing a hands-on, stress-free experience that combines fun with foundational STEM learning. Sensory Exploration: Engages sight, sound and touch, bringing projects to life and inspiring curiosity while helping children understand how things work. Comprehensive Learning: Integrates science, technology, engineering and mathematics into cohesive learning, developing critical thinking, problem-solving, teamwork and creativity. Perfect Gift for Young Innovators: Made from safe, high-quality materials, offering hours of reliable educational play, ideal for birthdays, holidays or special occasions. Powered by 3 × AA batteries (not included), ready to fuel your child’s passion for discovery. Specifications: Material: Durable ABS Recommended Age: 6+ years Size and Weight 25Pcs : 28x 25 x 7 cm; 760 g 34Pcs : 42 x 28 x 7 cm; 1000 g 45Pcs: 38 x 28 x 7 cm; 1100 g Package Includes: 1 x Science Experiments Circuit Board Kit 3 x AA batteries(NOT INCL)