The Cordless Light Bulb - Stylish Retro Lighting Anywhere! Our rechargeable LED light bulb recreates the look of a classic filament bulb, but with no wires - comes complete with a USB cable and provides 5 hours of illumination from a 1.5-hour charge. Use it as a night light, table decoration, cool camping/festival lighting - great for dad\'s 50th birthday or Christmas gift! Note - as a safety feature, the screw fitting is oversize to prevent attempts at screwing it into a mains light fitting!