Not only does this mirror have the magnification and lighting you need, but it also has a built-in fan to keep you cool and dry while you apply makeup. The 7.87" diameter mirror has a 5X spot mirror so you can see every detail, plus LED ring light illumination. The built-in fan has 3 fan speeds. The base has a built-in tray to hold essentials. Battery uses 4 AA / USB Tray 6.89".