Choose from Daylight 6,000K, Cool light 4,000K, and Warm light 2,700K in both the light therapy and desk mode. This highly functional lamp can be customized to your needs simply adjust the brightness level to your liking, move the arm and shade into the perfect position, and charge your phone whenever needed using the built-in USB port. With a CRI (Colour Rendering Index) of over 95 and a large 16.5cm diameter shade, you can be sure of exceptional light quality and shadow-free, evenly diffused light.Ideal Use: Light therapy, Office work, Reading, Creative work, Video calls. Light therapy mode: 10,000 lux at 16cm with automatic 30 minute off timer. Choice of Daylight 6,000K, Cool light 4,000K and Warm light 2,700K in both modes. Effortlessly alternate between light therapy mode and desk lamp mode. Therapy lamp desk lamp with 3 colour temperature options.