SIGMA Front light Buster 100 BlackLi-ion, Buster 100 weights only 62 grams. 120 lumens in a highly compact design make the Buster 100 a universal companion with an outstanding light output., Battery, 6 modes, 2h charging time, IPX4 splash resistant, tool-free mounting, two-stage battery/charge indicator, charging possibe during operation, 2-10h