LED Bulbs by Ruiandsion. Details:Features: Wide voltage design – 6-40volt voltage range.Suitable for 6V 9V 12V 15V 18V 19.2V 24V flashlights, Torch Light, bicycles, Bike and other devices Non-polarity design – No need to consider polarity. Can be used for positive and negative polarity. Specifications Socket: P13.5S Voltage:6-40V(6V 9V 12V 15V 18V 19.2V 24V…) Color:Warm White Color temperature: 4300K Brightness: 600Lumen Chips Type: 3030 LED Quantity : 10 LEDs per bulb Polarity:Non-polarity Size:30*9mm (LxD) Beam Angle: 360° Working temperature: -40°C ~ +70°C Lifespan: Up to 50,000hrs Usage:interior lights, Bike, Torch lights, Flashlights, Work Lights,etc.