Gpods create a light rhythm according to different songs and volumes by the fluctuation amplitude of the sound captured by the earbuds when playing music. So, GPods can show a different real-time dynamic light effect when playing music. To satisfy people's curiosity, the GPods APP will show a small preview of the light effect according to the rhythm, not real-time visual effects. Choose your favorite rhythmic effect to use and you can quickly see the difference between various rhythms. Don't play music when the earbuds are inside the charging case, the rhythm modes won't be visible.