Batteries: 1 CR2 battery required. (included) Date of first availability: September 25, 2020 Manufacturer: ASIN: B08K34MBNV [8 LIGHT MODES/TIMER] Steady on and 7 flashing modes: Combination, in waves, sequential, slo-glo, chasing/flash, slow fade and flashing/flash. The timer keeps the string lights on for 6 hours, with 18 hours of off every 24 hours. You can press the timer button for more than 3 seconds to turn on/off the timer function (the lights flash twice means the timer is on/flash once means the timer is off). [REMOTE CONTROL/MEMORY FUNCTION] There are 8 buttons corresponding to 8 modes on the remote control. You can control the string lights indoors within 22 meters. (Please note that you should point the remote control at the USB.) The remote control will also save the last mode and brightness you choose automatically. So you don't need to reset them next time. [CHRISTMAS CURTAINS WITH LIGHTS] Plugging in USB is more convenient than the power outlet, especially when you are outdoors. You can plug it into a power bank, laptop, etc. The moment you plug it in, the white Christmas lights will light up. Then press the button on the USB to change the mode. When you unplug the plug, all functions should be restored next time. [SIZE] The 200 LED lights have 10 strings. Each string has 20 LED lights. The length of the extension cord is 3 meters. The size of the Christmas curtains with lights is 2 meters * 2 meters. [IP44 WATERPROOF/SAFETY] The IP44 waterproof grade provides sufficient protection against rain and snow, which will not affect the outdoor Christmas waterfall lights. (Please note that the USB is not waterproof.) The string lights and USB will always maintain a low temperature. It is 100% safe to touch. [PERFECT FOR DECORATION] The strings, USB and extension cord are transparent and clear. Perfect for indoor and outdoor decoration as well as Christmas, Valentine's Day, holidays, wedding, party, bedroom, living room, garden, etc. Decorate your home this Christmas, you will get compliments from your neighbors and friends! [ADJUSTABLE BRIGHTNESS] There are two buttons on the remote control to adjust the brightness. Different lights make you feel different. Strong light is suitable for a Christmas party. Dim light is suitable for rest. [SATISFACTION GUARANTEE] The waterfall lights come with 30 days free replacement service and 12 months warranty. And we will be online 24/7. If you have any questions about this product, please feel free to contact our customer service, we will solve the problems for you.