COB GROW 192W(64&times;3W) COB LED Grow Light for Indoor Greenhouse Hydroponic Plants Growing (Black) Lights are in USA warehouse now , delivery 2-5 working days . COB (Chip on Board ) Led offers the best light mixing and operates at cooler temperatures than standard led grow light . COB GROW Light use a 60 degree reflector cup design to achieve a more intense PAR value by properly reflecting the best uniformity of available light, better for flourishing vegetative and flowering growth . IDEAL SPECTRUM : A wide range of spectrum from a variety of colors are used to emit the best proper lighting for photosynthesis. Specifically, the spectrum reads as 630nm, 660nm, 440nm, 470nm, 530nm and 730nm. This blend is most effective for any and all kinds of plants. EFFICIENT GROWING : Compares to traditional 250/300 watt HPS/MH while consuming only 93 watts. Idea for indoor and home grower. Much decrease in energy consumption, allowing you to plan for more lights in your setup while still cutting costs. WARRANTY & CUSTOMER SERVICE : Accept return unconditionally within 30 days upon received . All parts can easily be requested by email within warranty period 2 years .