Verilux VP04WG4 Travel Lamp Natural Spectrum Rechargeable Task Lamp The Verilux Rechargeable Task Lamp provides Natural Spectrum light while you travel and is a terrific addition to any home or work environment. The portable flip lamp has 11 powerful LED bulbs to provide the color balance and high contrast that you know and expect from Verilux signature daylight illumination. The rechargeable Travel Lamp provides up to 4 hours of Natural Spectrum light on a single charge. It can be powered by 3 regular AA batteries, rechargeable batteries or it can be powered by an AC Adapter so you can use it anywhere and for all your tasks.