months and still going strong [SEP] this is definitely the most inexpensive entry into the sonicare line well worth the pricelikes lacks some of the features of the higher end models such as the little beep that prompts you to move on to a different quadrant of your mouth no indication of low battery when the batteries are done they are done leaves me running around with a mouthfull of toothpaste while fumbling to replace the batteriesi have had mine for about months with no issues other than periodic brush and battery replacement recently added two more to the household for the kids