I purchased this mirror to replace one that gave up the ghost in less than a year's time. Installation was relatively simple and since my previous mirror required that you fill it with water, filling this mirror was not an issue. What was an issue is that the lights are absolutely useless. They do not illuminate the mirror at all. To say that I was disappointed is an understatement, especially considering the number of LED lights that surround the mirror. I replaced the batteries thinking that might have something to do with it but there was no change. Very frustrating, especially when my old mirror had a total of 4 LED lights that did a great job of illuminating the mirror. I sent the unit back to the manufacturer and requested a refund. One word of caution. The adhesive used to attach this mirror to your shower is quite strong, so be careful when you are removing the base plate.