These BagelFlasks series feature the swarms of glowing carbon particles that arrange into quasi-stable structures around the plasma torus. The effect is stable over time, but we recommend to shake the flask from time to time and let it cool down every 3-4 minutes of runtime: the flask surface gets really hot (be careful)!
Due to higher gas pressure, this flask requires extenal ignition with a mini Tesla coil and some preheat (1-2 minutes). They also heat up more than regular ones. But does that really matter when you observe your personal canned galaxy within the glass walls...