3 Cree Xm-l2 U2 LEDs3000 Lumens In High Mode White 7 Steady Illumination & 5 Strobe Modes 4-cell 18650 (2600mah) High Quality Rechargeable Li-ion Battery Pack Engineered To Ensures The User More Than 1 Month Of Constant Run Time On Firefly Mode 481m+ Beam Distance Auto-memorization For All Settings Unique Digital Circuit Control Technology To Maximize Battery Life & Consistent Light Output Performance Tough Durable Type III Anodized Finish Machined From Aircraft Grade Aluminum Waterproof Ipx6 Tempered Glass Resists Breakage Or Scratching On Impact Double-sided Coating Maximizes Light Output Superior Heat Sink Designed For Quicker & Better Heat Dispersion Crenellated Bezel On The Head For Self-defense Advanced Ergonomic Design Matte Style Finish & Anti-slip Knurling For Firm Grip Stands On Tail Cap To Serve As A Lamp Multiple Illumination Functions While Charging Standard 5v Output To Charge Ipad Iphone & Most Other Mobile Devices battery: Uses 4 Cell 18650 (2600mah) High Quality Rechargeable Li-ion Battery Pack included Accessories: 1 Ac Charger 1 Nylon Holster & 1 Spare O-ring