i like this a lot [SEP] i have gone through many travel magnifying mirrors this one has the best design so far the only thing is that the on off switch is stamped on no button so sometimes it goes off when pressed other times you have to press it a couple times no button like i said so guessing from the symbol where it is i think i will not use the battery option just the usb option therefore that is how it will go on and off when i unplug that is a very nice feature to have