BA9S LED Bulb Short Round 6 to 12 Volt DC. Operates only negative ground. Maximum voltage is 16 volts. Long life up to 30,000 hours. Dimmable with a variable voltage source such as a dashboard dimmer switch. The viewing angle is up to 120 degrees. The forward firing output is up to 7 Lumens. Comparable to a 4 to 9 Watt incandescent bulb. Available in White 6000K, Red, Yellow/Amber, Green, Blue, Ultra Violet and RGB Red/Green/Blue. If the color is not listed then we are out of stock of that color and takes about 4 to 8 weeks to restock that color. The Ultra Violet color is real faint due to the Lumen output and eye sensitivity. The RGB Red/Green/Blue color sequences please see the video for more information. The White 6000K color uses about 21 mA at 12 volts. The White 6000K color approximate dimmable range is from 2.81 to 12 volts. The Red color uses about 19 mA at 12 volts. The Red color approximate dimmable range is from 2.81 to 12 volts. The Yellow/Amber color uses about 19 mA at 12 volts. The Yellow/Amber color approximate dimmable range is from 3.5 to 12 volts. The Green color uses about 19 mA at 12 volts. The Green color approximate dimmable range is from 3.5 to 12 volts. The Blue color uses about 19mA at 12 volts. The Blue color approximate dimmable range is from 4 to 12 volts. The Ultra Violet color uses about 19 mA at 12 volts. The Ultra Violet approximate dimmable range is from 4 to 12 volts. The RGB color uses about 17 mA at 12 volts. The RGB color approximate dimmable range is from 4 to 12 volts. These LED bulbs do not have built in load equalizers and may require load equalizers to be installed to operate correctly. Every bulb is tested before shipping. One year warranty from date of purchase. Included 2 bulbs per package. CE and Rohs.