Replace the incandescent bulb found in AA Mini MagLite flashlights with this 30-lumen LED lamp... and extend your battery life by up to 25 hours Also included in this set is a tail-cap pushbutton switch you can add to your MagLite so that you dont have to adjust the focus to turn the flashlight on or off. Requires AA Mini MagLite, not included. Please note, does not fit Mini MagLite LED flashlights compatible only with standard incandescent Mini MagLite flashlights.