Dr. Bulbs&trade; -Pack of 12- 5W (50W Equivalent) MR16 GU10 Base Dimmable LED Spot Light Bulb, CRI 80, 40&deg; Beam Angle, 450 lumen, UL Listed, Soft White 3000K Produces 450 lumens of light. 5W 120V AC. CRI of 80. Beam angle of 40 Degrees. Diameter: 1.97", Length: 2.13", Weight: 0.13lbs. Replace a 50W Halogen bulb by 5W LED, saving at least 85% of energy. Lifespan of 25000Hrs. "ESTIMATED YEARLY ENERGY COST $0.84" (based on 3 hrs/day, $0.11/kWh) Dr. Bulbs&trade; products uses 100 % safe materials and are UL Listed [E360539] to avoid electrical shock & fire hazard. DIMMABLE and Light up instantly without flickering. Easy Installation, Standard MR16 shape with GU10 Base, Installs into all GU10 socket bases directly. MANUFACTURER's NOTE: We ship directly from Western State. Be sure to check where this item ships from; Non-American vendors may not be shipping authentic Dr.Bulbs items. Make sure shipping times are less than 10 days.