100mW Laser Pointer Wavelength:532nm Press button,2*AAA battery. Most popular portable laser Product name: ... 10mmBeam distance(in darkness)300meters~10000metersPower supply2*1.5V AAA Alkaline batteries(included)Power switch typeMementary on push buttonExpected lifetime(hours ... , bars, ktv etc.Package contentGreen laser pointer, 2pcs AAA battery, manual, metal box(optional). 100mW Green Laser Pointer