Material: ABS, Built-in: 200mAh battery, USB charging, Product size: 10.5 * 4.5 * 1.3cm [Flexible Book Light Head]--The book lights led head can be rotated 90 anticlockwise, 180 clockwise, 45 downwards,350 flexible holder bends to any angle for your best viewing. Perfectly meet your lighting direction needs. [USB Rechargeable Reading Light]-- Built-in 200mAh lithium rechargeable battery and Charged by any universal USB interfacecomputer, power bank, adapter, car charger, or USB outlet for recharging. No cable needed, easy and convenient. Fully charged takes 1.5 hours and provides 8 hours lighting time. [ 3 Brightness Levels Clip Light with ON/OFF /DIMMER Switch ]--25 Lumens, 3000K warm white light, 4300K natural white light, 8000K cool white light. Turn the book light ON/OFF and adjust brightness from 10% to 100% by pressing manual switch. Good for eye protection and creates a private reading space for you without disturbing bedmate. [Lightweight & Portable Reading Lamp]--This kids book light Slim and lightweight, ideal for clipping on a book when nighttime reading; can be completely folded flat and slim, portable put in a pocket, suitable for reading in bed or travel reading. [Multi Purpose Bookmark Light]--This book light ideal gift for kids, adults and bookworms,can be also used as a bookmark. Perfect LED reading light for paperback books, magazines, bedtime stories, newspaper etc.