The 8 Multi-Strand Fiber Optic Garden Lights have 4 clustered fiber optic twinkle lights. These lights use red, blue, green and amber LED bulbs which do not produce heat. Each box of LED Fiber Optic Garden Lights comes with a 110 volt controller. This controller sets the lights to do the following options: On/Off, Combination, In Wave, Sequential, Slow Glow, Sparkling Chasing, Fade, Steady Burn. Each set comes with a total of 8 stakes that are perfect for any garden, walk-way, or potted plants.