This LED String Light Has 8 Modes That Include Combination, In Wave, Sequential, Slow-Glow, Chasing/Flash, Slow Fade, Twinkle/Flash And Steady On. The String Light Will Create A More Warm, Romantic, Cheerful, Relaxed Atmosphere, You Can Adjust Different Modes According To Different Occasions. This String Light Is Plug Operated, 2 Pin Plug Required. Voltage: 120. The Curtain Size Is 9 Feet X 9 Feet.