1.1. Efficiently Convert Mechanical Energy into Electrical Energy: This hand crank generator allows us to witness firsthand the conversion of mechanical energy into electrical energy, providing a practical demonstration of this fundamental scientific concept. 2.2. Construction for Long lasting Use: Made from sturdy PVC and coils, this generator is designed to withstand repeated use in educational settings, ensuring reliable performance and a longer life. 3.3. Easy to Operate and Connect: With a compact structure and simple design, this hand generator is easy to set up and operate, making it ideal for hands on demonstrations in physics classrooms and electronic experiments. 4.4. Clear and Intuitive Demonstration Process: The instrument's clear components, including the base, armature rotor, and hand wheel, allow for a straightforward demonstration of the generator's working principle, helping us grasp the concept easily.