Tienen polaridad Item: RX28MM 31MM-4014-9SMD-WPower :about 1.2WLumen : 100lmColor temperature: White 6000KChip: 4014 LEDLength:28mm/31mm optionalVoltage : DC12-14VWorking temperature:-40-+75 degreeLife span: 50000hoursWarranty: 12 monthsFit for : Car Festoon Light / Dome Light/Reading Light