Rechargeable Book Light with Power Display, Ultralight LED Clip-on Lamp for Read About this item: Five Color Tones Customizable Brightness - Our LED reading light offers five color temperature options (2700K, 3500K, 4500K, 5000K, 6000K) and six brightness levels. With a simple touch, you can create your ideal lighting environment. The innovative battery level display lets you monitor the remaining power at all times Flexible Head Rotation - The head rotates 90 horizontally and 45 vertically. Each dual head rotates 90, providing comprehensive lighting. Easily adjust to avoid disturbing your partner Sleep Timer Function - Set timers for 30, 45, or 60 minutes to help you fall asleep peacefully and improve your sleep quality Long Battery Life Charging-It has a built-in rechargeable 1000mAh battery that can last up to 100 hours on a single charge. It also comes with a Type - C cable, making your usage more convenient