Product ID: ML2 Photon II Micro-Light. Extremely compact yet amazingly bright, now you can always have a light with you. And it has a lifetime guarantee. Glass-filled Polyurethane construction which makes it almost indestructible. The Photon II features a convenient on/off switch for continuous use in addition to a squeeze button. Lithium battery (included) has a 10 year shelf life. It will power the red light for up to 120 hours of continuous use, the extra bright turquoise, blue and white lights will run 12-14 hours compared to 3 hours for a typical C- cell flashlight.