This is the latest MJ-808U model from MagicShine. This MJ-808U features the latest super bright CREE XM-L U2 LED. The new battery pack was made from a UL/CE/TUV/PSE certified supplier. It includes a small protection circuit board with over-charge, over-discharge and short-circuit protection function. All MagicShine lights come with 1 year limited warranty for lighthead and a 6 months limited warranty for the battery pack, charger and other accessories. MagicShine MJ-808U 1100 Lumen light head (105 grams, 3.7 oz.)offers two great new improvements: The 5 stage power meter and integrated control circuit to protect against overheating and separate them from the competition. As the battery depletes from 100% the backlit button will change colors from Green - Blue - Yellow - Red. High (100%) - Low (50%) - Off (hold 2 seconds) - Strobe (hold 4 seconds) Push and hold the switch for 2 seconds will turn off the light from any mode 5 Stage power meter: Green (75% - 100%), Blue (50% - 75%), Yellow (25%-50%), Red (10% - 25%), Flash red (less than 10%) Light Source: Cree XM-L U2 Luminous flux: Max 1100 Lumens (LED Emitter Rating.) LED lifespan: 50,000+ hours Shell material: 6061-T6 Aluminum alloy Surface treatment: Type III hard-anodized anti-abrasive finish Switch Type: Click switch Battery: 4 x 18650 Li-ion LCD battery (8.4V 4.4 AH) Runtime: 3.5 hours (100% brightness) Battery life: 500 times cycle Charging time: 3 - 3.5 hours.