Features:

• Crafted from durable polycarbonate and aero-grade aluminum alloy with a hard-anodized finish
• Comfortable, chafe-free nylon headband adjust to almost any head size
• "Precision Digital Optics Technology" allows for extreme reflector performance
• Remarkably wide 100° beam angle for more even illumination
• Head able to rotate vertically 180° for a wider range of lighting angles
• Features three special tactical outputs:
  • Strobe Mode: Can be used as a signal or to disorient a target
  • S.O.S. Mode: Used to signal for aid in emergency situations
  • Location Beacon: Marks your current position with an efficient flash
• Easy-to-use single switch interface allows for easy one-hand operation
• Memory function saves last used brightness level
• Internally rechargeable (when equipped with one 18650 battery) via micro-USB port
• Power indicator displays inserted battery's voltage (accurate to 0.1V)
• Reverse polarity protect prevents damage caused by improperly inserted batteries
• Advanced Temperature Regulation (ATR) technology limits chances of overheating

Specifications:

• LED: CREE XM-L2 (U2) LED
• Power Source: 1 x 18650 OR 2 x CR123A
• IPX Rating: IPX-8 (Waterproof and submersible up to 2 meters)
• Impact Resistance: 1.5 meters
• Brightness Outputs (Using 1 x 18650):
  • Turbo - 1000 Lumens - 1 Hour
  • High - 420 Lumens - 2 Hours 30 Min.
  • Medium - 210 Lumens - 7 Hours 15 Min.
  • Low - 38 Lumens - 25 Hours
  • Ultralow - 1 Lumen - 680 Hours
• Brightness Outputs (Using 2 x CR123A):
  • Turbo - 1000 Lumens - 45 Min.
  • High - 420 Lumens - 2 Hours 15 Min.
  • Medium - 210 Lumens - 4 Hours 30 Min.
  • Low - 38 Lumens - 22 Hours
  • Ultralow - 1 Lumen - 340 Hours
• Peak Beam Distance: 117 meters
• Peak Beam Intensity: 3400 cd
• Dimensions:
  • Length - 3.11" (79 mm)
  • Body Diameter - 1.06" (26.9 mm)
• Weight: 98.4 g

Package includes (with original box packaging)

• Nitecore Headlight x1
• Nitecore 18650 3400mAh Battery x1
• Micro-USB Charging Cable x1
• Spare O-Ring x1
• Warranty Card, Operation Manual