Perfect for outdoor use, camping tent, nightly leisure time and party decoration, atmosphere making etc.. with high and low settings for outdoor activities: BBQ, camping, playing cards, or lie on your leisure chair to enjoy the romantic moonlight, create mood lighting with lover. INSTALL QUICKLY --Cordless design with built-in auto adjustable strong clamp, no need for extra tools, just need to clamp to your umbrella,safety and convenience,suitable for most patio umbrellas. Fit pole size from 1.1 to 1.78 inch in diameter. WIDE APPLICATION -- Not only for umbrella lights, but camping tent lights or perfect for cubby, pool, party, enjoy a meal in hotel or restaurant balconies under the umbrella , playing games on the beach, using computer, reading your favorite book, listenmusic, picnicking on the lawn, lying on leisure chair in the evening chatting with your families or play with your friends after sunset or in a dark environment.