Halogen Reflector Lamp, T4 Bulb Shape, Recessed Single Contact (R7s) Bulb Base Type, 16, 500, 650 W, 120, Bulb Primary Application Stage and Studio, Miniature Bulb Type, 3, 200 K, 360 Degrees Bulb Beam Angle, Shatter-Resistant No, Dimmable Yes, Bulb Finish Clear, 1/2 in Bulb Dia., 3 3/16 in Overall Length