GEERTOP Patio LED Umbrella Light, 24 LED Lights At 72 Lumens, Self-adjusting Design, 3 X AA Battery Operated, ABS Material Self-adjusting design that fits almost all umbrella poles. UPGRADED POLE CLIPS. 33 FOOT LIGHTING AREA: 24 LEDs at 72 Lumens (a measurement of light output) can cover an area of 33 feet in diameter. Strong light source. LED lights will last at least 30,000 hours COOL WHITE TEMPERATURE (CCT): This light color gives off a cooler perception than Warm White or Natural White which is perfect in summer months. This temperature light also reduces the likelihood of insect attraction (as compared to lanterns and torches). RUNS ON AC adaptor or 3 x AA BATTERIES (This Umbrella Light was tested using standard AA batteries and lasted for approximately 6 hours.)