1. Electromagnetic launcher is a technology that uses electromagnetic force to accelerate the launch of objects, using electromagnetic pulses to accelerate the projectile to a high-speed state, and then launch it at a very high speed. 2. The Enhanced electromagnetic cannon kit, we have reduced the complicated wiring method, greatly reduced the difficulty of welding, and made it more suitable for novice DIY. At the same time, we have added power, charging, and launch indicator lights, which can more clearly observe the operating status of the electromagnetic cannon. 3. With a Level indicator circuit, which allows for more convenient observation of the charging status. 4. The bottom battery box design is beautiful and convenient, with a more beautiful appearance. 5. This kit is suitable for welding exercises, electronic experiments, and DIY enthusiasts. Working voltage:DC 3V Power supply method:2 x AA batteries (requires self provided batteries) Accumulated current:50-65mA Emission