Review on 🧪 MCIGICM Circuit Assorted Science Experiment Kit: Unleash the Curiosity in You by Mario Schultz

All 120 pieces work right out of the box with no extra time or burn tests. It's not a discharge case, it's designed to be used fairly "straight". The 4.6V power supply and 200 ohm series resistor are suitable for testing, noting that the lower Vdrop colors were slightly brighter due to the higher current. The colors are beautiful, I especially like the pink. A good buy if you're looking for a variety of 5mm color LEDs for projects.