Lamp, Shatter-Resistant, CFL, CFL 19W/MINI/UVB TWIST/27K(PK X 10), 19 Watts, 120 Volts, 1200 Initial Lumens, 2700 K, 82 CRI, Electronic Ballast, Modified Rapid Start Type, EL/mDT Twist Shape, 2.3 IN Dia, 4.4 IN Long, Twist Bulb, Medium (E26) Base, 10000 Avg Life Hrs, Silicone Coating