Nitecore HC70 USB Rechargeable HeadlampSpecifically Designed For CavingThe Nitecore HC70 is engineered to be the perfect cave exploration LED headlamp. This caving headlamp comes with a separate battery pack connected by a nylon cable that is impervious to wear and tear. The nylon cable therefore will not rip or shred under extreme circumstances in while cave spelunking. The Lithium Ion batteries which power your LED headlamp are encased in a metal battery pack made of an aero-grade aluminum which prevents damage if dropped. Additionally, the Nitecore HC70 caving headlamps battery pack can be used as an emergency power bank. If an emergency situation develops then you will be able to charge your flashlight or a cell phone right off the battery pack. These durable features make the HC70 headlamp one of the most valuable LED caving lamps you could own because it offers hands-free, reliable, and long-lasting light options that are essential to outdoor enthusiasts.Moreover, the HC70 LED headlamp provides extremely bright outputs. The LED headlamp comes with 8 different lighting modes which include: Turbo, High, Medium, Low, Ultra-Low, Caution, SOS, and a Beacon output. The caving lamp has a maximum output of 1000 Lumens and a maximum runtime of 220 hours which makes it the perfect tool for long cave explorations or hiking trips. The HC70 comes with an IP67 rating protecting it from outside dust and moisture. The high IP67 rating means you will not have to worry about getting lost in a cave forever if your headlamp or battery pack gets wet! Stay safe and get ready to have some exciting adventures with the new Nitecore HC70 headlamp.Features: 5 brightness outputs and 3 special light outputs which include: Caution light, SOS, and Beacon Advanced Temperature Regulation technology to prevent your lamp from overheating The separate battery can act as a power back and can charge 2 devices at once The cable is constructed of a durable nylon material making it wear- and tear-resistant LED battery indicator shows you remaining power Special battery tail cap prevents water and dust from entering your battery pack 90-degree flood illumination creates a wide beam of bright light Micro-USB rechargeable Battery pack is constructed from an aero-grade aluminum alloy with an HAIII military grade hard-anodized aluminum alloy finish Specifications: LED: CREE XM-L2 U2 Power Source: 2 x 18650 Lithium-Ion batteries Peak Beam Distance: 182 meters (597.113 ft.) Peak Beam Intensity: 8,300 cd Brightness Outputs: Turbo 1000 Lumens - 2.25 Hours High 550 Lumens - 4 Hours Medium 240 Lumens - 10 Hours Low 65 Lumens - 30 Hours Ultralow 1 Lumen - 220 Hours IPX Rating: IP67 Impact Resistance: 1.5 meters (4.92 ft.) Dimensions: Height - 2.20" (56 mm) Width - 1.41" (36 mm) Length - 2.51" (64 mm) Weight (Cable Included): 3.45oz. (97.80 g)