Features: Power your science experiments with this upgraded hand cranked generator! No batteries required, simply crank the handle to generate electricity. Explore the science world of science and nurture teens' mind with the Science Experiment Kits. Encourage creativity, foster analytical thinking, and inspire a love for learning. Perfect for students, teachers, and outdoor enthusiasts interested in science experiments and environmental awareness. Suitable for laboratories, schools, camping trips, and outdoor activities that require reliable electrical support. Stay prepared and powered up anywhere you go! Unleash the wonders of science and be ready for any power outage or off grid situation with this hand cranked generator. Specifications: Color: Wood Color Material: Wood Size: Approx.16x12.5x8.5cm/6.29x4.92x3.34in Weight: Approx. 220g Package Includes: 1 Piece Wooden Manual Engine Model note: 1.Please allow 0-1cm error due to manual measurement. make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you