Small outline to match the #55 bulb. .7 inches long by .46 inches wide. Up to 135 Lumen output. The leds are small 7020 smd so they are very low profile. The BA9S base is designed to operate at 6 volt ac or dc for both positive ground and negative ground vehicles. The life is up to 30,000 hours. The bulb is comparable to a 4 to 10 watt halogen light bulb. The viewing angle of the 7020 LED's is 120 degrees. Available in White 6000K, Warm White 3000K, Red, Green, Blue and Yellow/Amber. CE and Rohs listed. Compatible with the following: #1810 #1847 #1855 #1866 #316 #1850 #47 #44 #87 #755 #55 #1888 #1906 #44B #44G #44R #44Y #44A #130 #503 #239 #51 #238 #267 #240 #6251 #55R #55Y #55A #55G #55B #1949 #55N GE 27819 GE 25450 T6418AMB T6418RED 3 Candle Power 1815 TW4 53 57 182 257 363 1445 6253 1925 Maxwell Model 25-C 1924 Maxwell Model 25 1923 Maxwell Model 25 1922 Maxwell Model 25 1921 Maxwell Model 25 1920 Maxwell Model 25 1931 Buick Mazda 51