36 LEDs with 25 Lighting ModesThe book reading lamp offers 5 kinds of color temperatures: white, warm white, warm white, warm white, warm white, amber. Each color temperature has 5 brightness levels: 20%, 40%, 60%, 80%, 100%. A total of 25 lighting modes to meet all your needs. Energy saving and eye protection: With USB, the LED light consumes about 75% less energy than conventional bulbs. traditional incandescent, saves money and is more environmentally friendly. No flicker, no glare, no UV radiation. So it can protect your eyes Touch sensor and memory function: The reading lamp uses humanized design which is touch control. With just a simple touch, you can turn the clip light on/off and change color temperature modes. The memory function automatically memorizes the brightness of the last use, smart and convenient. Sturdy clip and flexible neck: the LED reading lamp with padding can be attached to any edge of furniture without scratching it . Suitable for desk, table, computer table, headboard, drawing board, etc. With the 360 flexible gooseneck, you can adapt it to any angle High Capacity Battery and USB PlugWith the built-in 1800mAh high capacity lithium battery, the Operating hours from lightest to darkest are 3 hours, 7 hours, 9 hours, 16 hours and 30 hours. The USB interface is compatible with all devices with USB port, e.g. laptops, USB chargers and power banks.