Rechargeable Solar LED Umbrella Light -3 X AA rechargeable Battery Operated and a solar panel which is charging the batteries - Adjustable 2.3-5 cm to Fit Tightly Around Your Umbrella Pole - Cool White Color - Made of Tough ABS Material (Rechargeable Batteries Included) 24 High Flux LED Lights are equable Soft Irradiancy, No Glaring Eye Protection. High Flux LED Lights has 370LM. So it is more bright than normal led lights. And it can work more than 5000 hours. Powered by 3 X AA rechargeable Battery (included) and solar panel It is easy to install. No tools, cords or wires are required, easily grasps around the pole and snaps in place. Just install the solar and the light on the umbrella, the light will light up in the evening and automatically charge light at the daytime, so you will see the umbrella light up every night without turn the light on manually. Normally it will light for 6 to 8 hours. It is so convenient. Please make sure the pole panel will be install in the sun so that it will charge power from the sun. If you do not want to charge by solar, you could buy a seperate AC adaptor to charge the batteries directly. As it is bulk production, we can not make sure all lights will work perfectly, normally there is a percent quantitiy of defective. If the light set you receive have any quality problem, we will replace the order free of charge. We offer guarantee of 3 month.