iLampens 4 X G4 2W COB led bulb AC DC 12V 150-170 Lumen Warm White 2 Watts, Non-Dimmable, 170 Lumen, 2902K warm white, G4 LED Bulb, AC/DC 12V 2w led bulb replaces 20watt Incandescent Bulbs Based on national average electirc price $0.14/watt/year. Take a sample as 1pcs 2w, operating cost savings: (20-2)watt*$0.14/watt/year = $2.52/year/pcs Silicone Gel Housing Led bulb, Mercury-Free, No hum, No Flicker And No UV Applications: Restaurants, hotels, Ambient , Art galleries, Fumiture lighting, Office lighting, Merchandise display lighting,interior lighting,etc.