GE Lighting 97785 50/100/150-Watt A21 3-Way Reveal Light Bulb Clean, beautiful light Base: Medium screw (E26) Bulb Type: A21 Watts: 50/100/150 Initial Lumens: 450/1,150/1,600 Clean, beautiful light Application: 3-Way table lamps Base: Medium screw (E26) Bulb Type: A21; Watts: 50/100/150 Initial Lumens: 450/1,150/1,600