Pack of 96 Replacement C9 Style Christmas Light Bulbs. Energy saving bulbs use half the watts of a normal C9 bulb therefore reducing the energy needed to light the bulbs. There is no compromise in brightness or color as they are actually brighter than standard C9 bulbs and last twice as long. Color: Opaque pink. Bulb size: C9. Screw in style base. Lights are made to commercial specifications. UL listed for indoor or outdoor use. 120 Volts - 3.5 watts. Material(s): glass bulbs/nickel base finish.