Bookmark Book Light, clip-on reading light for books in bed, unlimited brightness levels, soft light, easy on the eyes, built-in USB cable for easy charging. Great for readers and kids Perfect Reading Bookmark Lights - Experts agree that reading is the last thing the most successful people do before bed. We are committed to creating a book lamp that allows you to enjoy reading at night. Take care of your eyes. Our book lights are available in 3 colors and are dimmable. Choose your preferred mode. Enjoy reading in bed - recommend this reading light to anyone who has the same problem or who likes to add a little light to their books. Soft light won't bother your spouse. Even brightness prevents eyestrain. Whether you're reading in bed or using your Kindle, there's plenty of lighting on both sides of the page. ULTRA-LIGHT DESIGN - Our book lights lay flat and act as bookmarks. 1. 5 oz (about 141.7 g) is lightweight and will not add weight to your books. The soft rubber lets you bend it into any shape and position you like. Ultra-thin and easy to carry. USB Rechargeable - High quality rechargeable battery provides up to 20 hours of continuous lighting in lowest mode. When charging, there is no need to look for other data cables, the built-in USB can be directly inserted into mobile adapters, power banks, computer USB ports, etc.