At first we had a reading lamp from a bookstore with 2 AAA batteries, but because the quality ones was rather poor and the batteries were "Swallowed" in no time. This lamp uses CR2032 coin-cell, which one indeed gets nachgeschmissen today, and is therefore more compact and easy to bestigen the book. The LED is fairly bright but not too bright, and the batteries should last for quite a few evenings. So: Very good.