LED Qty.: 10M 100LEDs, 20M 200LEDs, 30M 300LEDs, 50M 500LEDs. String Light length: 10M/20M/30M/50M. String Light with 100 to 500 LED little bulbs. Every string has 8 different modes: combination, in waves, sequential, SLO GLO, chasing/flash, slow fade, twinkle/flash, and steady on.