Professional -3 Types Adjustable Full Spectrum: SONLIPO has designed 3 type of Sunlike full spectrum according to the 3 growth stages of plants (Seeding, Vegetative and Flowering & Fruiting Stage). Prevent them from growing taller in vain, makes the stems grow thicker, increases the size and number of flowers. Increases the yield of plants to the maximum, maximum 2.8 g/w. The 3 full spectrum is controlled by 3 switch (VEG, V & B, BLOOM), easy to use and adjust. SUNSHINE, Dimmer & Timer: The grow light consists of 660nm Red light, IR 740nm, purple UV 390nm, and 6000K, 5000K, 4000K, 3000K white light spectrum, infinite close to Natural Sun light. Rotating dimmers can adjust the intensity of the light. The growing lamps supports timer setting, and time reservation function for your convenience. SUNSHINE function, 30 minutes slowly brighten or darken to make plant grow healthier. (Perfect for 3x3 ft, Max coverage 4x4 ft.) High Efficiency Energy Saving: High PPFD, up to