Spark World Rechargeable Battery Operated Desk Lamp – 3 Le..More

Long Lasting Touch Lamp: this LED lamp is equipped with 1800 MAH built-in rechargeable battery, will work 4-6 hours at highest brightness after full charged. The included 4.9ft USB cable is very handy to charge the lamp with USB adapter(not included) power bank, USB wall outlet, laptop or desktop(Please charge the lamp to protect the battery's lifespan if long time no use)