The OttLite swirl replacement bulb delivers the right mix of brightness and contrast to bring true colors and comfortable clarity to your world so you can enjoy your time even more. You’ll see colors accurately and fine print and details with ease under this unique low heat, low glare illumination that helps reduce eyestrain.Details:White2.25" x 2.25" x 6.13"25WReduces eyestrainLow heat and low glare