Easy to operate, tactile switch. Large, comfortable distance that is adjustable to reading material. Stable arm with flexible, freely adjustable lampshade. Uniform illumination with no cast shadow. Very convenient as no need to change the bulb. 5000k, 400lm. Colour: silver/anthracite. Illumination level: approx. 2400 lx (distance 30 cm) Colour rendering index: CRI > 85. Height: min. 117 cm up to max. 151 cm.