The Optronics International ONE LEDline of single-diode lamps include the four-inch round back-up lamp, No. BUL003CB, and six-inch oval back-up lamp, No. BUL002CB. The maps are designed to provide extremely long life and they are viable alternatives to incandescent back-up lamps. The ONE LED offerings provide a service life of approximately 100,000 hours, according to the company. All ONE Series LED Lamps meet FMVSS 108 photometric requirements for visibility and safety. The lamps come with a lifetime warranty, and lenses and housings are made of robust polycarbonate material that is sonically welded. ONE Series LED Lamps employ a solid-state, surface-mount device (SMD) design that protects their electronics against moisture, shock and vibration.