The Rechargeable Bulb Light features colored filament within a clear bulb. Powered by a USB-rechargeable battery (cord included) that delivers 5 hours of light after about 90 minutes of charging time, the bulb can be held safely in your hands and has a flat bottom so it can stand on a table or desk. It’s also equipped with a realistic base that is nevertheless just a bit too large to be screwed into a standard outlet—thus preventing unsafe use. The Rechargeable Bulb Light measures 4.75h x 2.5" diam.