Specification NameLED FlashlightBrandConvoy ModelM21A MaterialAluminum AlloyLEDLuminus sst40 6500K white tintLens typeAr coated glass lensReflectorSmoothBattery1x 21700 or 18650 lithium battery Battery not included It is recommended to use original 21700 battery from Samsung LG Sony or Tesla Mode4 modes 0 1 3 30 100 Max current output 6000mATemperature protection management insideLumen2300Lumens Max Head diameter44 5mmHeight155 8mmBody diameter27 3mmTail diameter31 3mmWeight168gTailstandYesMode memoryYesReverse polarity protectionYesLow voltage warningYesFeatures Now we offer another driver version which has a simple 4 modes for switching which is very suitable for ordinary users Modes 0 1 3 30 100 max current output is 6000mAIts biggest advantage is that no frequency can be seen in any mode and there is temperature management It can control the flashlight temperature not to exceed 55 degrees Celsius If the flashlight temperature is below 55 degrees Celsius it will output full current If it is above 55 degrees Celsius it will constantly adjust the current so that the flashlight will not overheat Package Included 1xConvoy M21A LED Flashlight