LEDMall CREE XML T6 LED Flashlight 5 Modes Zoomable Torch High quality aluminum! Cree XML T6 led Bulb 5 Mode: High, Medium, Low, Strobe, SOS(Lightly push the tail button to change modes) Powered by: 1xDimensions(L x Head Dia. x Body Dia.): 5.31 x 1.37 x 1.10 inch / 3.5 x 3.5 x 2.8 cm 18650 3.7v battery or 3x AAA battery(NOT Included)