GE Lamps Quartzline incandescent reflector lamp has power and voltage rating of 30 watt and 120 volt. Lamp with medium screw base offers a average life of 2000 hour. It measures 2.500 inch x 3.930 inch. It produces 140 lumen and is ideal for decorative as well as chandelier applications. Great for use in directional fixtures such as recessed can lightingEstimated yearly energy costs $3.61 based on 3 hours per day $0.11 per kWhLasts 1.8 years based on 3 hours per day usageR20 bulb with medium base2500K180 lumens provide subtle, reassuring light30 wattsGE soft White indoor spotlights provide warm, pleasing everyday light without harsh glares and shadows. These bulbs' funnel shape and reflective coating help direct light where it is needed better than a standard incandescent bulb.