Comfortable and Adjustable Brightness: Designed with 18 LED bulbs (18 lumens), which produce natural, non-flickering light that won't hurt or strain your eyes. And there are 3 lighting modes, you can adjust the brightness just by touching the switch. USB Rechargeable Battery: Extraordinary battery life with built-in 1200mAh rechargeable battery and USB charging cable, you can use the lamp on high intensity for up to 3 hours after fully charging it, and the indicator light turns from red to green when fully charged. Portable and flexible: this lamp Reading features a mini size and compact design, making it very easy to carry. The gooseneck arm (360 rotatable) allows you to position the light as you wish. Usage: perfect for reading, working, studying, emergency use , suitable for study, office, bedroom, living room, university residence, also perfect as a night light for baby's room.