3 colors 3 brightness levels-3 color temperatures, warm light (3000K), warm white light (4500K) and pure white light (6500K), each CT has 3 brightness levels. According to different purposes, to ensure that you can always get the most suitable lightcolor. Quickly click to adjust the brightness, short press to adjust the brightness. It is wider than other single-head book lights. 10 LED lights are the best number of portable but bright music stand lights. Two independent heads can illuminate 2 A4 pages. The product is small and portable, and the packaging is very small. It is verysuitable for use at home, hotels, cars, airplanes, etc. It can be put in a handbag or handbag, and you can take it with you. Free clip and bracket light-adjustable clip, maximum 1.5 inches (approximately 4.0 cm). The foam pad will protect your book/stand from scratches. The infinitely flexible neck allows you to accurately position and focus the light. No need to adjust thelights from time to time. USB and battery power supply-Use 3 AAA batteries (not included in the scope of supply) or a USB (USB cable included) to power your music stand. Use 3 AAA batteries (low brightness setting, with 2 LED lights), enjoy wireless 70 hours of reading. It isvery suitable for music stand, reading (iPad, Kindle, tablet and regular books), piano performance, orchestra, performance, work table, DJ, craft table, computer or award lamp, etc.