This lighted (green) pen meets my expectations with one disappointment: From online illustrations, it would appear that one just pushes the button at end of pen to have the green night light come on. Unfortunately in reality, user must first remove the cap to the pen, then turn the whole pen to switch on the light. This is not easily done with one free hand. Though this is not enough to have me return the item, I am disappointed for this inconvenience that will undoubtedly slow my immediate use of the pen in the dark, under stressful conditions.[Have since, decided to return this pen...In addition to earlier comments, please note that the "pen" for this lighted pen is of poor quality with intermittent successful use. Very frustrating.]