LED Flaslight Cree Torch Tactical XPL HI Modes Battery Charger Lamp Light Tool AestheticColorBlackFlashlightsFlashlight ModesGroup 1 (3-Mode): 5% > 40% > 100%; Group 2 (5-Mode): 5% > 40% > 100%> Strobe> SOSLens TypeGlass LensMode Count3/5Reflector TypeSMO default Switch PlacementTailSwitch TypeClickyTail StandYesLight SourcesLight Source Brand CreeLight Source ModelXPL HILumens (Max)992.8 LMPower & BatteriesBatteries IncludedNoBattery Form Factor18650Required Battery Count1ManufacturerBrandConvoyPackagePackage TypePlainDimensions us | metricDiameter of head44.5 mmLength143mmDiameter of body25.6 mmProduct Weight145 g How to change the mode group:choose the low mode ,wait about 5 seconds ,when you see flashing ,turn off your flashlight.then turn it on , you can switch to 3mode group or 5mode group. About LED tint XPL HI V2-1A 6500-7000KXPL HI U6-3A 5000-5200KXPL HI U3-7A 3000-3300k Modes customization:Default mode 2groupsGroup 1 (3-Mode): 5% > 40% > 100%; Group 2 (5-Mode): 5% > 40% > 100%> Strobe> SOSYou can select other modes,there are several kinds of choice(only one group):(mode option 1)5%low---30%mid---100%high---SOS---strobe(mode option 2)5%low---30%mid---100%high(mode option 3)10%low---100%high(mode option 4)10%low---100%high--strobe Flashlight protection function explanation:(1)Mode memory function: if the flashlight is turned on more than 3seconds ,current mode can be memoried.Turn it off and then turn it on ,still the original mode.if less than 3seconds ,Turn it off and then turn it on ,it goes into the next mode.(2)Low voltage protection function: when the voltage of battery is 2.9-3.1V,the flashlight flashes 2times/sec with low brightness,it's a low voltage alarm.(3)Battery reverse protection:if your battery is reversed,dont worry ,no any problem will happen.