Highly recommended for development of color recognition and cause & effects skills because of its four color wireless controller. The tactile LED fiber optics can be placed on the user’s lap for a close, hands-on experience. The unit is portable, but the light source must be kept out of reach. Approx. dimensions: Light source 8¼“ H x 6 ¼ W x 5” D - Controller 13” diameter x 3 ¾ deep - LED Fiber Optic 6’6” x 100" strands.