This Mag instrument Maglite lamp replacement will ensure you have light when you need it. It is designed to work in conjunction with the reflector to deliver optimum performance. It offers quality and dependable illumination for your Maglite flashlight. Keep one of these xenon lamp replacements in your vehicle or in the house, so you will always have an extra on hand. High intensityGet up to 3 times the range and 2-1/2 times the life of standard PR bulbsFor Alkaline batteries onlyMag-Lite C & D size2 cell