No Battery Create power without batteries! Simply turn the handle, the electricity generated makes the bulb bright. The faster you turn the handle, the more power you generate. Perfect Education Prop This amazing handheld electricity generator is perfect for demonstrating the energy transformed from mechanical to electrical. Great for classroom physics teaching demonstrations. Clear Working Principle Made with a clear plastic casing, can clearly see the motor, gears and wiring. 6.3V DC Current Generator This grip style handle generator allows connection to electrical circuits. Screw out the miniature light bulb, can be used with almost any experiment requiring up to 6.3 volts DC. Portable 178g ABS material, light weight, small size, convenience to carry and save. Features: Amazing handheld electricity generator! Create power without batteries! Great for classroom physics teaching demonstrations. Simply turn the handle, the electricity generated makes the bulb bright. The faster you turn the handle, the more power you generate. Made with a clear plastic casing, students can clearly see the motor, gears and wiring. This grip style handle generator allows connection to electrical circuits. Screw out the miniature light bulb, can be used with almost any experiment requiring up to 6.3 volts DC. This science kit is perfect for demonstrating the energy transformed from mechanical to electrical. Specifications: Material: ABS Material No-Load Output Voltage: 6.3V Output Current: 0.2A Storage Method: Well-ventilated, dry, indoor temperature preservation Light Bulb Replacement: 6.3V, 0.3A Miniature Light Bulb Weight: 178g(approx.) Package Includes: 1 x Generator