The SL-813G is a flicker free desk lamp with an ionizer for your home. The SL-813G’s ionizer is great for those that want an air purifier but want to try one out first. The light bulb in the SL-813G is flicker free and only uses 27 watts but puts out light similar to a 150 watt bulb.The bulb is controlled by an IC chip from Japan that produces the 25,000 HZ frequency for the flicker free guarantee. The neck is flexible with a swivel head to move light where you need it most. The bulb of the SL-813G produces natural light and can reduce glare and eyestrain.For a healthier lamp that can give an overall sense of health and well being the SL-813G is for you!