Cree Xm-l2 LEDup To 960 Lumens On High & A Month Runtime On Firefly Mode 450m+ Beam Distance 4 Different Brightness Modes & Strobe Mode Auto-memorization For All Settings Unique Digital Circuit Control Technology To Maximize Battery Life & Consistent Light Output Performance Reverse Polarity Protection. Tough Durable Type III Anodized Finish Machined From Aircraft Grade Aluminum Water Resistant For Outdoor Use 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 Head For Self Defense Advanced Ergonomic Design With Anti-slip Knurling & Matte Style Finish For Firm Grip Stands On Tail Cap To Serve As Lamp Multiple Illumination Function While Charging Standard 5v Output To Charge Ipad Iphone & Most Other Mobile Devices battery: Uses 1 26650 (4500mah) Rechargeable Li-ion Battery (3.7v) included Accessories: 1 Micro USB Cable 1 Holster 1 26650 Rechargeable Li-ion Battery 1 Lanyard 4 Spare O-rings