Flicker-free, bright white light duplicates natural lighting, which contributes to an overall sense of health and well being. Soothing natural light minimizes glare and eyestrain and increases contrast and clarity. 27 watt energy efficiency light bulb is equivalent to an ordinary 150 watts bulb and lasts 5 times longer. Efficient compact fluorescent lamp is controlled by an IC chip originated from Japan, which produces a flicker-free frequency of 25,000Hz SL-811 model features an built-in Ionizer to purify the air as well as an Anti-reflective lens that transmits more light to decrease computer glare, reduce eyestrain and disturbing reflection. Features: Simulates natural lighting Flicker free (25,000Hz frequency) Japan made 27W bulb included Bulb has an average life span of 10,000hrs Flexible goose neck Swivel head Built-in Ionizer (SL-811) Anti-reflective lens (SL-811) SL-811Regular price: $56.99Sale price: $49.00Color:: GrayBlack 1999-2012 ShoppingAtNet.com All Rights Reserved.