The Ultra-Lux 14500 is a small AA sized, pocket torch that uses the new Cree XPL LED. The flashlight uses a small custom reflector which produces a medium long throw for such a small unit. The torch has three output levels with a memory mode, and are offered in Electroless Nickel Aluminum, Brass, Copper, Stainless Steel and Titanium. The unit produces about 750+ lumens on the high setting with a smooth on/off twist head operation. The maximum power is produced from an IMR 14500, but a standard 14500 will work but at less output. THE TOP POWER SETTING SHOULD ONLY BE USED FOR SHORT PERIODS OF TIME BECAUSE OF THE SMALL HEAD AND HIGH POWER OUTPUT IT GENERATES LARGE AMOUNTS OF HEAT. The settings are as follows: High-100%: Medium-30%: Low-5%. The unit will step down to a lower setting when the battery needs to be recharged and has a memory mode. The flashlight has a length of about 3.25 inches and a diameter of 0.80 inches. Price does not include batteries or a charger, and must be purchased separately.