USB Rechargeable The umbrella light has built-in rechargeable batteries, which can be recharged use, without changing the battery, which is more energy-saving. And with USB data cable, which is more convenient to charge power supply, computer or wall mounted charger.Upgraded 28LED Umbrella Light This patio umbrella light is composed of 28 high-brightness LED lamp beads; it supports brightness adjustment and is an excellent helper for outdoor activities at night.2 Brightness Modes The 8 and 28 lamp beads of the patio light can be selected freely according to different environmental needs. Up to 400 lumens when all 28 high-brightness lamp beads are on. Light up your night.Long Working Times Umbrella lights can be fully charged in 8 hours. High-brightness (28 lamp beads) can be bright for 18 hours when fully charged; low-brightness (8 lamp beads) can be bright for 54 hours. Accompany you through a romantic night lifeEasy to Installation +Widely Use Patio umbrella lights can be adjusted freely according to the size of the umbrella handle, easy to operate and directly installed; suitable for 2-5cm umbrella handle.Perfect for outdoor use, camping tents, card games or chatting with family or friends in the yard.