the sad thing is [SEP] this mirror does not work on batteries i tried two different mirrors and both were defective the sad thing is it is a great mirror i love the three settings and i love that it has two sides one of which is a i returned the first mirror the second works when it is plugged in but it feels like a rip off to pay for something that does not work as it should when on batteries it will turn on but it will not change settings and it will not turn off making it useless the cord makes it cumbersome unless you have an extra place to plug it in that is out of the way hidden in summary if you are willing to only use the mirror with the plug if you wil be very happy if you are counting on the battery option do not even consider this mirror as it does not work