WZYuan 4 LED Flexible Clip on Desk Table USB Reading Lamp Book Night Light - Dual Adjustable Long Arm with 2 Head Color: black Made with high quality durable plastic Powered by 3 AAA batteries (not included), or use USB power cable(included). Easy to use with Clip-on or freestanding. Clips onto any book, eBook reader, or thin surface. Clip and twist to set the perfect angle.