OMOTON Eye-Care Rechargeable Folding LED Desk Lamp for Reading (Built-in Battery, Eco-Friendly, No Flickering, No Ghosting), White 1. Built in 1000mAh Battery, long lasting time, perfect for reading, working and any emergency situation. 2. Simple and Elegent design, perfectly match your bedroom or desk. 3. Adjustable arm to meet your different needs, you can even hanging the lamp on the wall. 4. Recharges via USB to Computer or w/Adapter or any other device with a USB output. 5. Folding, Lightweight, Yet Reliable & Super Bright, You deserve it, so does your friend!