[5 Adjustable Brightness Levels] This reading light has 5 brightness levels, choose the most suitable level based on your needs. Thanks to its 5 high-quality, professionally installed LEDs, you can have the light distributed evenly across the reading pages; Meanwhile, there will be no flickering or disturbing light. What's more, the little book reading light can memorize your previous brightness setting as default. [3 Color Modes & Protect Eyesight] The little book reading light in bed has 3 color temperatures: amber (1800K), reading mode general (3400K) and focus (6000K). Amber mode filters 99.9% of blue light to protect and prevent eye fatigue; General reading mode of the reading books bed light creates a relaxing and comfortable reading environment for reading novels or poems; Focus mode highlights areas clearly so you can focus on your tasks. [USB Rechargeable & Long Lasting] Rechargeable and compatible with any type of USB or standard port. This LED book reading light has a built-in 500mAh battery, lasting 10-80 hours (depending on the light setting). That means you can enjoy your reading from at least 20 days up to 3 months if you read 30 minutes a day (also based on your settings). Also, there are 4 power indicators to show you the remaining power. The perfect bedside reading lamp. [Flexible & Portable Design] The clip on this reading lamp can be opened up to 150. The head can rotate to the left, right and down with angles of 90, 90 and 45 respectively; This allows you to freely adjust the angles for proper lighting. Plus, at 1.41oz (40g) it's lighter than an egg. Its small, lightweight design makes it easy to carry or clip to paperbacks. The light for reading books at night in bed is small and ideal. What's included in the package: 1*Reading Light NOTE: DO NOT turn the light head forcefully to the left or right beyond 90, as this may break the electric wire inside the book lamp.