5 to 10x more effective than sodium or halide system Accelerating the photosynthesis to make plants grow quickly LED growth panel emitting color:                                      Blue(wavelength:455-470nm) LED quantity: 225 pieces Input voltage: 110 or 220V AC Single LED beam angle: 15 to 30 degree  Power consumption: 13W Energy-saving & Eco-friendly &No risk to operate & Long life span Life span: 100,000 hours Best distance to plant: 1.5 to 2.5m LED growth panel size: 305 x 305x 33.5mm LED grow light inner box size: 360 x 330x 50mm LED grow panel gross weight: 880g/piece Carton size: 79 x 36 x 34cm Carton packing: 15 pieces/carton CE and RoHS certifications compliant