DIY Manual Crank DC Generator Power Light Bulb Science Educational Physics Block Experiment Set

Description: Hand-crafted engine technology, let the children make their own hands, experience learning, learn scientific knowledge in the clock. Specification: Product material: plastic, ABS, hardware, wire Package size: 14.5*14.4*5.5 Accessories: switch, light bulb, base plate, hand crank generator, spring clip Features: 1. Sleek design, exquisite burr-free, no scratching. 2. This series of small-scale technology is a type of electronic building blocks that can be combined with each other 3. Full bayonet splicing, not easy to damage, repeated use, spring clip, strong conductivity. 4. Humanity design, opening hole, LED light bulbs, power generation to make light bulbs, precise hole spacing, realize your DIY. 5. Helping children develop their creativity ability,emotional ability,logical ability,practical ability,communication ability. Package Included: 1Manual-Cranked Generator