Check the listing for details. SANSI 400W Full Spectrum LED Grow Light Bulb Indoor Seeding Plant 36W 2-Pack. Condition: New. Listed at 51.29 USD. SANSI 36W Full Spectrum LED Grow Light Bulb Indoor Seeding Plant 400W Equivalent Description: No lampshades needed--- Compared with other grow lights with wider beam divergence which need lampshades, SANSI LED Grow lights produce a directional light that is aimed at the plants to avoid light loss. Easy to Install --- Operates like a light bulb with a standard E26 socket with no special lamp-base necessary. Recommended coverage area up to about 4.20 sq. ft. mounted 18”-24” above the plants with varying lighting schedules dependent on the plant(s) being grown. Full Spectrum --- Each SANSI LED chip has an evenly distributed spectrum between 400-780nm. Instead of having multiple LED chips with individual colors (white, blue, red, far red), each LED chip has a mix of each color giving off a whitish glow. Ceramic LEDs vs. Aluminum LEDs--- Compared with other grow lights (all competitors use aluminum LEDs), ceramic dissipates heat more efficiently than aluminum because it is non-conducive. This allows our LED chips to be mounted directly to ceramic; making each chip free of fans, housing, adhesive, and PC boards. Ceramic modules have fewer parts than conventional LEDs, and therefore conduct less heat and generate more savings.