There is a constant vibration on your wrist at certain intervals and you can speak accordingly. In short, you can speak fluently with the timing of external stimuli, but I am not using it right now. We can also call this the distraction effect. You can speak with every beat, it's a bit complicated but if you practice you'll understand. It was just vibrating. There was an Android vibrate app. I didn't test it because I use an iPhone, it might be incompatible with the bracelet.