My original goal was to purchase 15 clamp-on led lights for under 10 dollars each for use as music stand lights for our ukulele club. I purchased 5 different lites for testing. We may only use them 2 or 3 times a year, so an official $40.00 music stand light is out of the question. The below are all reading lamps, not music stand lamps. Gritin 9 led for $8.99 - 180 degree head (on sale) Glocusent Willow 10 led $8.99 - 180 degree head Briignite 14 led for $9.99 90 - degree head Gritin 16 led for 13.99 - 180 degree head One cheap-o from another on-line store, not worth mentioning * Unfortunately for my wallet, the Critin 16 turned out to be the best for our situation. For a music stand light in a dark room you need all of the light shooting straight down. Any light coming out the front or side that can be seen by the audience or other performers is very annoying. * The Gritin 9 and Willow both emit light from the front and sides. My thoughts of making a mask with gaff tape for either of these, times 15 lites, put them out of the running. * The Briignite 14 shoots straight down and is the easiest to adjust because it has 3 switches on the lamp head (on/off-color-intensity) but the gooseneck is long and we would have to have a loop in it. The supplied usb-a to micro usb charging cord is only 18 inches long. One single led charging indicator changes from red to green. However the Briignite 14 makes a great work light as the clamp also serves to sit on a flat surface and gives about 9 inches of clearance for your hands on tiny projects. It's a keeper, but just not for use with a music stand, but good as a work light. * The Gritin 16 comes with a 36 inch usb to usb-c reversible plug. The flexible shaft has a re-inforcing gusset at the clamp and at the light. The 7 inch flex tube is 3 times the thickness of all the other lights and appears that it will hold up better under constant bending. It perfectly illuminates a notebook binder with side by side 8 &1/2 x 11 pages. See the picture taken in total darkness. * The only negative of the Critin 16 is that there is only a single, multipurpose button on the lamp head to control on-off-color selection-brightness level (in steps 10% to 100%). It takes a while and many button presses to get to your perfect light level and I see the single button as the weak spot and probably the first thing to break.. There are 4 blue micro leds on the clamp which show the charging/discharging rate (see picture of fully charged battery). They are mostly hidden by the moveable portion of the clamp and are not an annoyance. I cannot address longevity, but almost every rechargeable led light has a few negative reviews stating the battery will not hold a charge after xxxx months. I will update this review with any problems we encounter. * The lamp head is in the picture, but since all of the light is downward, you can't see it which is perfect. The lamp head is about 2 inches above the notebook and about 4 inches forward from the stand. * The setting in the picture is max daylight which is the first push of the button. When you want to turn the lamp off from this position, you must press the button 3 SHORT presses which cycles thru BLUE light, ORANGE light, and then OFF. (A long press starts the process of stepping down the intensity down to 10% . If you keep holding the button down when it reaches 10%, it starts stepping back up to 100%. * If you have it set for a less than 100% intensity and turn it off, it remembers the intensity percentage when tuned back on. However, it always comes on as daylight no matter what the color selection was when you turned it off. So if you turned it off when it was set to orange 60%, one quick press will turn it on to daylight 60% , and 2 more quick presses will get you to orange 60% again. It takes a little time to learn the routine, but after about 3 uses it becomes second nature. * Also, there was a maximum of 5 lights per order per day, so it took 3 days to purchase all the lamps.