Choose a flashlight that is good for you -- and your plants. The Active Eye flashlight shines a beam of green light through its 9 powerful, high-intensity LED bulbs. The benefit of green light over white is that green doesn't interrupt the essential plant photosynthesis process, whereas b bursts of white light can be incredibly disruptive. The green bulbs, which burn for over 100,000 hours, are bright enough to be used for a number of other night light needs. Operate the flashlight with three AAA batteries, sold separately.