ThruNite TN36 UT Ultra Thrower 7300 Lumens Cool White CW 3x CREE XHP70 LED Flashlight, Power by 4x 18650 Battery (NOT Included), 6Modes Brightness Levels   1.Most Advanced & Brightest --- TN36 UT adopts the latest CREE XHP 70 LED, which reaches 200 lm/watt, a milestone of LED technology. Moreover, TN36 UT CW is well equipped with CREE XHP 70, which gives the greatest light efficiency and makes the output up to 7300 lumens. 2.Durable & Reliable --- Advanced driver of TN 36 UT makes the energy efficiency up to 96.5%. With ThruNite ITC Technology, the flashlight is well protected from overheating and can be used for a long time. 3.Compact & Portable --- As small as a 330ml-capacity Coke can, the compact TN36 UT is definitely a perfect moving flooder king, especially with the complimentary holster. 4.Cost-wise & Affordable --- 1 dollar for 30 lumens compared to average 10 lumens/dollar on the market. Which one is the better choice?  5. Note: Only to ensure the 18650 batteries' discharge current can keep more than 5A, TN36 UT flashlight can get into Turbo and Strobe modes.    Features: Compact flood flashlight with high quality beam from orange peel reflector. Cree XHP70 technology gives great light efficiency. Advanced electronic switch with low voltage indication for silent operation. ThruNite ITC(intelligent temperature control) technology to prevent possible light damage from overheating. Six modes: firefly, low, medium, high, turbo and strobe. Reversed polarity protection system prevents damage to the light. Ultra clear tempered glass lens with anti-reflective coating. Aircraft grade aluminum body structure with knurling for firm grip. Premium type III hard anodized anti-abrasive finish. Memory function to set any mode(except for firefly, turbo and strobe) for immediate use. Only applicable for 18650 batteries to use.   Specifications:  -ThruNite TN36 UT  -LED: 3x CREE XHP 70 LED with a lifespan of 20+ years of run time.  - Runs on: 4 x 18650 (NOT Included).  - Working Voltage: 10.5-17.5V.  - Output/Runtime: Strobe(7300 lumens /137 minutes), Turbo(7300 lumens /95 minutes), High(2500 lumens /194 minutes), Medium(850 lumens /587minutes), Low(130 lumens /54 hrs), Moonlight(2 lumens /33 days).  - Max output of NW is a bit less than CW.  - Peak Beam Intensity: 20360cd.  - Max beam distance: 285m.  - Impact resistant: 2 meters.  - Waterproof to IPX-8 Standard (2M).  - Weight: 397g without battery.  - Dimensions: 135.4 mm in length x64 mm in diameter.  Accessories:  Holster x1  Spare O ring x2  Spare Switch Cap x1  Battery Carrier x1 (inside the flashlight) (Kindly Note: The package is without any battery)   Operation:    To Turn On/Off The Light: Press the side switch to turn the light on/off.   To Change Modes: When the light is on, long press the side switch to cycle through low, medium and high. Shortcut to firefly: When the light is off, long press the side switch to get firefly mode. Double click to turn to turbo from the strobe mode. Another double click to get strobe.   Memory Function:  The light will turn on in the last mode accessed, except firefly, turbo and strobe.   ITC Technology:  The light will automatically lower the current when temperature in LED or driver rises to 80 degrees centigrade to protect the flashlight from overheating. Thus to extend its lifespan.   Battery Replacement: Unscrew and take off the body near the head, insert four 18650 batteries into the battery carrier, put the carrier into the flashlight and screw on the body. With either end of the battery carrier towards the light head is OK. But make sure the batteries are correctly inserted into the carrier with polarities matched  (springs on the carrier should connect with the cathodes of batteries). Low Voltage Indication: When the indicating light on the switch turns from blue to red, it means the batteries should be replaced or charged.