CUSTOMIZE YOUR LIGHTING The book light for reading in bed has 3 color temperatures and 3 brightness settings. The brightest setting easily lights up 2 full pages of any size book, and the lowest creates a private reading space for you when your partner sleeps next to youRECHARGEABLE LONGLASTING The builtin rechargeable battery provides 470 hours of even, eyefriendly light based on your brightness setting. In just 1.5 hours, you can fully charge the rechargeable book light with the included micro USB cableINCREDIBLY LIGHTWEIGHT The mini reading light is so light at only 37g that you will barely feel the extra weight when you clip it to your book. The foldable design means it takes up very little space, just like a mouse, easy to pack for travelWELLDESIGNED CLAMP The LED reading lights clamp opens about 3 cm and provides a secure grip for thin objects, which is very suitable for books, ebooks, tablets, etc. The nonslip clamp is also padded with soft sponge to avoid leaving marks on your book and ebook coverFLEXIBLE METAL GOOSE NECK Its gooseneck is flexible so you can place the light exactly where you need it. And it is covered with metal material, which increases the durability and lifespan of the book reading lamp and avoids the lamp head shaking during use