Wanted to do indoor gardening (at least the seeding part) but have almost zero direct sunlight into the home. While i have zero experience with these things, one of my main concerns was the power draw. No way did i want to leave a 300 watt device on for 8 hours or more, but with the weather lately, I was going to have to do just that. I didn't see the whole 'usb plug' part and was a bit surprised, which is my fault for not reading, however it turned out to be a good thing. First thing I did was connect this to my portable battery pack and immediately found that it only draws about 17-18 watts on high!!!That's right, this thing is drawing the equivalent of just two led bulbs (ones I currently have are 9w) on high. Each step down results in about two watts lower for the most part till you get to low, then it's only drawing a couple of watts. In other words, I can run this for a long time on a portable battery pack that I can recharge on solar when the weather is cooperating.I'm no expert and I have my seedling containers by a window that doesn't receive direct sunlight, and using this for the last two weeks I'm starting to see growth.While I still don't understand all the different settings, the low power draw alone has me still using it.I'll update if something changes.It is very light weight. Easy to put together and move where plants are.The USB connector is easy to connect to the wall or powerbank.Good product.Just what I need! A high quality functional product. So far, this is my tomato, onion, Swiss chard and herbs. Quarantine's new hobby is growing tiny green plants. Satisfied clip (on a table) and timer function (just press the time increments you want and it will turn on automatically when you want it to start). The light itself is working fine. Best of all, the arm can bend into the shape you want, it's so cool to be able to move the arm, I'm so happy.I cannot get the automatic daily timer function to work, and I've had numerous email conversations with the manufacturer who just keep referencing the instructions. I have to manually turn it on every day. Maybe someone out there can tell me how they got theirs to function?It’s easy to set up. The timer is easy. (A little bit different from the picture it showed, but not affecting the functionality. )I want to plan it outside, but the weather is still crazy, and I want I make sure it is stronger before I plant it. The light helped. My tree looks a lot better now.When I try to set 12 hour timer, it is not staying with that time, it switches to 4hour, any suggestions on how to get this to work properly? other than that the light seems to be good, but I bought this light for the timer feature and it isn't working correctly.I love these plant lights. The flexible necks allow me to point them in different directions and cover all 4 shelves of holy basil, I never seen my basil bloom so quick. my basil. Love it, we don't get much sun in the winter. this is even easy to use with my plant stand. Great for small spaces. Perfect for grow boxes.Comes with USB cable and it's easy to set up, few levels of lights and timer. The stand is light but stable. Very easy to use and effective.