This lamp can bring the intensity of 3000K / 4700 / 6500K of light, providing you with sunlight, resisting winter depression, and helping you stay energetic and focused. The brightness can be adjusted with the touch of a finger. The timer function of the phototherapy lamp is available between 15/30/45/60-minute intervals. You can make changes according to your preferences and make yourself feel relaxed and comfortable. The SAD phototherapy lamp is made of durable ABS material. With a 360-degree rotating bracket, it allows you to place sunlight at any angle, horizontally or vertically. Powered by an adapter. The size is 9 3/4x7x3/8 inches, light and easy to carry, suitable for use at home or office.