Usage Tips:Features:1. The book lights for reading at night have 3 colour temperatures and 3 brightness settings. The brightest setting easily lights up 2 full pages of any size book, and the lowest one creates a private reading space for you when your partner is sleeping next to you2.The rechargeable reading light provides 4 80 hours of even and eye-friendly light based on your brightness setting. In just 1.5 hours, you can fully charge the clip on book light with the included micro USB cable3.The clip on reading light is so lightweight that you will hardly feel the added weight when you clamp it on the book. The foldable design makes it take up very little space, just like a mouse, easy to pack for traveling4.The book reading light clip opens about 3 cm and offers secure grip for thin objects, which is very suitable for books, e-books, tablets, etc. The non-slip clip is padded with soft sponge to avoid leaving marks on your book and e-book cover5. Its gooseneck is flexible so you can position the light exactly where you need it. And it is covered with metal material, which increases durability and lifespan of the LED reading light and avoid the lamp head shaking during useSpecification:Product name: Book LightsBattery: 1000 mAh polymer batteryLamp beads: 14 LEDs (6 yellow and 8 white)Power: Max 2.8WColor temperature: 1600-6000KOutput: DC5V 1ASwitch mode: touch and three-color switchingLong press for infinite dimming and brightness limit promptPackage Included: 1X Book Lights1X USB