Battery Operated Christmas Lights : Powered by 3*AA battery(not included), press the button on the battery box to switch the christmas lights On/Off and choose 8 different modes to satisfy your diverse needs. Auto Timer & Memory Function: The timer keeps 6 hours "On" and 18 hours "Off" once activated. This feature frees your hands and saves energy. The built-in memory chip remembers your last mode setting, eliminating the need to reset it every day. Waterproof & Easy to Install: These battery-operated Christmas lights are waterproof and can withstand various weather conditions, including heavy rain and snow. Hang them anywhere you like, both indoors and outdoors, to create a festive atmosphere. Wide Application: Perfect for Christmas, holidays, weddings, parties, and other celebration occasions, these battery-operated string lights can be easily put up or hung on Christmas trees, garlands, windows, doors, fences, and more. Battery Power Chirstmas Lights: The 50 LED battery-operated string lightstotal length 16.4ft, lead length 0.98 ft, lamp spacing 3.9in. The Christmas lights create a festive atmosphere for various occasions, especially for Christmas decorations.