【Easy to Use & Battery/USB Powered】2 in 1 power supply mode, support battery (Not included) or USB power supply（USB cord included）, easy to place or hang the large bulb Christmas lights on Christmas tree, car, fences, wreath, doors and anywhere for decoration. | 【Smart Timer】Automatically keep 6 hours on and then 18 hours off after setting the lighting modes. And the old fashioned christmas lights will turn on/off at the same time the next day, no need to turn on/off everyday. | 【8 Lighting Modes】 Large bulb Christmas lights have 8 lighting modes, such as fade and flicker etc. Press the round button on the battery box to adjust the lighting mode, to meet your needs in different scenes. | 【Waterproof & Safety & Energy Saving】IP44 waterproof. 50 LED big Christmas lights use LED bulbs, less energy provides more light, no need to worry about spontaneous combustion due to high heating temperature; 4.5V low voltage is safer for the human body. | 【Customer Service】 If you have any problems with the outdoor Christmas lights, please contact us, we will at your service 7*24 hours.