Energy saving and eye protection: With USB, LED light consumes about 75% less energy than traditional incandescent bulbs, saves money and is more environmentally friendly.No flicker, no dim'glare, no UV radiation. So it can protect your eyes.Touch sensor and memory function: The reading lamp uses a humanized design which is touch control. With just a simple touch, you can turn on/off the clip lamp and change the color temperature modes. The memory function automatically memorizes the brightness of thelatest use, smart and practical.Sturdy clip and flexible neck: the LED reading light with padding can be attached to any furniture edge without scratching them. Suitable for music stand, table, computer table, headboard, drawing board, etc. With the collar360 degree flexible swan, you can adjust it to any angle.High Capacity Battery and USB Plug With the built-in high capacity 1800 mAh lithium battery, the working hours from brightest 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 external batteries. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.