With the book light, you no longer have to hold a flashlight in your hand or mouth, just wear the light around your neck or around your arm while reading or working on a book, helping you focus on what you're doing without having to worry about light. Features -Color: White. -Material: ABS. -Size: About 6.00X5.00X1.10cm/2.36X1.97X0.43inch. - Voltage: 5V. -Power supply: 600MAH Lithium polymer battery. - Brightest duration: about 8 hours. - Charging time: about 2 hours. - Maximum brightness: 50 lumens. -Three-stage adjustable color temperature: 3000K - 5500K - 4500K. -The lamp is made of good grade materials makes it smooth, when you touch it, you will not feel burr. -Can be used as a practical gift to your friends, they will be very happy. -Fine workmanship of our product ensures you a and delicate details. -The light's arms are supple and adjustable can get the angle most comfortable to you. -Lightweight, portable, easy to carry and use, it can bring you great convenience. Package list: 1 x lamp 1 x USB cable