[8 Lighting Modes]: 2 pack 50LED Christmas warm white mini string lights have 8 lighting modes for you to choose - Combination, In waves, Sequential, Slow Glow, Chasing/Flash, Slow fade, Twinkle/Flash, Steady on. Adjust the lighting modes by pressing the round button on the battery case [Timer Function]: Comes with built-in auto timer function(6 hrs ON, 18 hrs OFF), to avoid forgetting to turn off the Christmas lights. Just turn on the lights (any lighting mode) at 6 p.m. in the evening, and it will turn off at 12 a.m. at midnight, then auto on at 6 p.m. in the evening, this cycle repeats itself ad infinitum, no need to reset it everyday [Safe Green Wire String Lights]: Keep at a low temperature state after lighting up for hours, ensure and maximize the safety. 3 AA Batteries operated, not include batteries. No extra cord or socket required, for safe and convenient use. [IP 44 Waterproof]: The strong construction makes the string lights tough and sturdy, and waterproof designed string