Operating Up to 30-40 hours successively working in overcast and rainy day after the battery fully charge Power ≥ 0.4W Charge 170-190mA 170-190mA Battery Ni-Mh rechargeable battery Lighting source Super bright LED Colors of lighting source yellow/red/blue/green/white LED quantity 4 pieces Currrent of lighting source 25-30mA/hour View distance Over 100-200 meters Temperature range -20 癈－ 60 癈 Material of body Polycarbonate Body of QH-03A Aluminum alloy, stainless steel and Polycarbonate Size (mm.) QH-01A ; 145 x145 QH-02A : 147 x147 QH-03A : 203x 203 QH-04A : 145 x145 QH-05A : 149 x149