My 1st electric, it took a little getting used to. Now it seems to leave my teeth feeling tartar/plaque-free. It has a 2 min. cycle that offers short beeps at each 30 sec. interval. If you need more time, simply push the on/off button again to restart it. I’m still not clear whether it can use multiple head types or just the type that came with it. Philips offers heads for several specific conditions which seems like they could be useful for individual needs. The internal battery lasts about a week between charges. I’ve used this for about a month.