LOWER COSTS & HIGHER-QUALITY YIELDS---Using the Newest high-yield LED technology-587 pcs Samsung 2835 diodes. So BP1500 LED Grow Lights achieves a high energy efficiency of 2.7 umol/J and improves the light transmittance. The LED Growing Lights consumes only 150W of power, which is 50% less than the operating power of other 300W HID/Blurple/HPS lamps, while help gets 50% higher yield harvest. The maximum output is 2.5g/w. Veg Coverage: 3.5 x 3.5 ft, Flower: 2.5 X2.5 ft.