Specification:BrandConvoyLumens2000 lumensDriverA: 4 modes: 0.1%-3%-30%-100%, max current output 6000mAB: 12 groups of modes: max current output 6000mALow pressure warningyesReverse polarity protectionyesLens typeconvex lens (high borosilicate glass)Mode memoryyesTail standyesBattery1x 18650 or 2170..