Features:Lightweight, small size, high performance L-Shaped headlampLED Color Option:3 x SAMSUNG LH351D LEDs, maximum output of 2,000 lumens3 x NICHIA 219C LEDs CRI≥90 high color rendering LED option 1: 3 x SAMSUNG LH351D LEDs CRI≥90 high color rendering Ultra-Low: 2 lumens; 200 hoursLow: 25 lumens; 79cd; 18 meters; 17 hours Mid1: 120 lumens; 261cd; 32 meters; 4 hour 15 minutesMid2: 280 lumens; 649cd; 51 meters; 1 hour 30 minutesHigh: 700 lumens; 1606cd; 80 meters; 1 hour 15 minutesTurbo: 2000 lumens; 4507cd; 134 meters; 1 hourStrobe: 700 lumens; 1 hourMax. output 2000 lumens Max. runtime: 200 hoursMax. beam distance: 134 metersPeak beam intensity: 4507cdLED option 2: 3 x NICHIA 219C LEDs CRI≥90 high color rendering Ultra-Low: 1 lumen; 200 hoursLow: 20 lumens; 100cd; 20 meters; 17 hours Mid1: 90 lumens; 387cd; 39 meters; 4 hour 15 minutesMid2: 230 lumens; 974cd; 62 meters; 1 hour 30 minutesHigh: 580 lumens; 2497cd; 100 meters; 1 hour 15 minutesTurbo: 1500 lumens; 6252cd; 158 meters; 1 hour Strobe: 580 lumens; 1 hourMax. output 1500 lumens Max. runtime: 200 hoursMax. beam distance: 158 metersPeak beam intensity: 6252cdLightweight, small size, high proformance L-Shaped headlampCan be used as a mini flashlightPowered by customized 18350 battery with 1100mAh capacity, which ensures the long runtime for this size lightThe included 18350 battery can be recharged through a built-in Micro-USB portMagnetic tail cap design allows for quick attach to any metal surfacesGold plated clip for transforming H17 to a handy L-Shape flashlightTIR (Total Internal Reflection) optic facilitates efficient light transmission with a broad beam and a generous throwSweat-channeling, reflective headbandStrobe setting that can disorient an attacker or serve as a distress signalHighly integrated single switch for all easy operationReverse polarity protection to guard against improper battery insertionIntelligent highly efficient circuit board design for max performance and long run timeIntelligent temperature controlled light output for user safetyAll circuitry contact points are gold-plated, providing better conductivity and superior durabilityLockout mode prevents accidental activationAircraft grade aluminum body structure.Military grade type III hard-anodized finishSize: 79mm (Length) x 24.3mm (Head Diameter) x 24mm (Tube Diameter)Weight: 43.8g(1.54oz.) w/o battery; 70.2g(2.48oz.) w/ batteryImpact resistance to 1 meterIP68 waterproof (2 meters submersible)Warning1. Unauthorized disassembly may damage the headlamp and void the warranty.2. It is normal if the surface heat is increased during use due to the excellent thermal conductivity technology. It is suggested to use in a well ventilated area with ambient temperature.3. Caution hot when using continuously for a long time. Do not put it on flammable materials for a long time, any fire or any safety problems caused by this will not be related to the manufacturer and distributors.4. Please check and replace the O-ring regularly to maintain the waterproof rating.5. Please check and lubricate the threads regularly with professional lubricant.6. Clean the contact surfaces regularly to keep the headlamp normal operation. If irregular strobe or failure to turn-on occurs, the contact surfaces may be dirty and requires cleaning by using alcohol cotton swabs.7. Remove the battery from the headlamp during long term storage.8. This headlamp is not intended to be used as a diving light.9. Do not aim the headlamp directly at eyes. Users must be over 18 years of age. Keep out of the reach of children.