The BioBrite Deluxe Light Visor is a breakthrough in convenience, efficiency and utility of bright light therapy. It is a wearable bright light source which is light weight, adjusts to fit comfortably around your head, and is powered by a rechargeable battery pack that leaves you free to move about. The BioBrite Deluxe Light Visor delivers safe, gentle, glare-free light. It is super efficient because the light is fixed close to the eyes. It does not interfere with vision, so the light Visor can be used as you walk, do housework, prepare a meal, eat, watch TV, ride an exercise bike - or travel. Peer reviewed tests have shown that the Visor is, indeed, as effective as a light box, and the Visor goes with you. You do not have to sit in one place to absorb the beneficial lux. Features: - Built in 3 hour battery pack -Battery charger for U.S. - Glare free white light -Light Weight -Adjustable for all sizes