About this item 2-Pack Indoor Grow Lights Included. Be Noted: USB charging adapter is not included. Each pack of indoor plant lights has 2 heads with flexible goosenecks. Highly Efficient to Indoor Plant Growth. The plant grow lamp has red lights and blue lights, which are good to plant growth. Plant Lights with Timer. 3 hour, 9 hour, 12 hour lighting time can be set. Auto on every 24 hours. 7 Dimmable Modes Grow Lights, good for small and large plants. Ideal to use on plant shelves, plant stands, desk. Easy to Install, Easy to Use. Each pack of the 2-pack grow lights has a strong clamp, which can be fixed to a desk, plant stands, plant shelves. The grow light adopts USB connectors, powered by common USB phone charge adaptors, powerbanks, laptops. Plug and use, no special skills needed for installation. (Power adaptors are not included.)