(2 pack) 12W LED Grow Light bulbs, Energy Efficient Indoor Garden For E27 Grow Lamps Energy Saving- LED saves a 60-80% electricity bill than HID lamp. Zero heat emiting- LED is cold light source with built in fans for LED chip cool and run well, won't burn your plants. Fits standard E27 socket; easy set-up with any desk lamp; no special lamp-base necessary. 1 year warranty! Polished aluminum body construction and ribbed design keeps the unit cool and highly efficient in luminosity; light operates easily for 24+ hours without overheating; overall service life is up to 50,000 hours. 12 LEDs (3 blue & 9 red), ultra bright. Really helps when the plant need extra boost of light, or a few of sun, raining, snowing , dark indoor etc. This led grow bulb has low power consumptionhigh luminous efficiency and long service life, the electronics inside are stepping down the voltage. the outside is constructed in a pure heat-sink fashion, It does not generate any noticeable heat even 17hrs a day. keeping your temperatures down perfectly.