MM (MAGIC MAX) is one of the classical designs in the NexTORCHTM series in 2005. It is very easy to take out with -and its batteries can be easily found. It can use one NT2 lithium battery -or two AA batteries with the help of the lengthen barrel. LUXEON STAR 1W LED made by LUMILEDS produces the long span-life (over 100000 hours, which means you can continue using it for over 10 years!). Light efficiency is 5 times higher than incandescent regular bulb. The most advanced digital current control circuit offers an invariable current to the LED -and makes sure the LED in the best brightness -and high efficiency to power the light on. To balance the convenience of toting, batteries purchase -and the cost of the batteries, multi-power supply is adopted in this high-power flashlight. MM with one NT2 lithium battery is as small as a key buckle -and is very easy to take. The installation of two AA batteries with the help of the lengthen barrel can reduce the cost of the batteries. MODEL: MM MATERIAL: Hard-anodized aerospace grade aluminum 6061 T6 COLOR: Titanium black DIMENSIONS: 84mm X 21mm (31mm Head Diameter) (with extra barrel) AUGMENT DIMENSIONS: 155mm X 21mm (31mm Head Diameter) (with extra barrel) BATTERY: 1XNT2 3V Lithium Battery(without extra barrel) 2XAA 1.5V Alkaline Batteries(with extra barrel) BULB: LUXEON STAR 1W LED LENS MATEWRIA: Full Clear Lens LIGHT OUTPUT: 35 LUMAN RUN TIME: 2XAA up to 90 minute of continues use 1XNT2 up to 75 minutes of continues use SWITCH: ON/OFF WEIGHT: 79g?Batteries Not Included? 49g?Batteries Not Included?