OPT7 3157 T-25-4 Advanced Bright 28-SMD LED Bulb - Reverse Signal Backup Light Bulbs w/ Load Resistors - White 28-Advanced Bright SMD LEDs lights per bulb Advanced Bright technology allows OPT7 LED's to last 20x longer than halogen, and 3x longer than other LEDs Solid State design makes it 100% water, shock, dust, and rumble-proof Direct Replacement makes install is simple, quick, and customizable Includes a hassle free 1-year manufacturer's warranty